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Full vulnerability report · 2026
CVE-2026-48907High confidence

Widget Factory Joomla Content Editor Improper Access Control Vulnerability

Widget Factory · Joomla Content Editor

10.0CriticalCVSS 4.0
Recommended action
Patch now

CISA confirms exploitation in the wild and lists 2026-06-19 as the remediation due date.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityCriticalOperational priority:Critical, unchanged from published severity.unchanged

Evidence used

  • CISA confirms exploitation in the wild.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 16.19% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs Widget Factory Joomla Content Editor and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 3 daysRemediation target: Within 90 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-34789

EU known exploited

A vulnerability in the JCE editor extension for Joomla allows the creation of new editor profiles for unauthenticated users, ultimately resulting in PHP code upload and execution.

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 16 Jun 2026. Evidence sources: cisa_kev, eukev_kev.
ENISA score
10.0 · CVSS 4.0
Advisory evidence
No linked advisory details stored yet
Recommended actionPatch now

CISA confirms exploitation in the wild and lists 2026-06-19 as the remediation due date.

Patch available
01

What, why and how

Widget Factory Joomla Content Editor contains an improper access control vulnerability which could allow for upload and execution of PHP code via the creation of new editor profiles for unauthenticated users.

What

Widget Factory Joomla Content Editor contains an improper access control vulnerability which could allow for upload and execution of PHP code via the creation of new editor profiles for unauthenticated users.

Why

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Widget Factory Joomla Content Editor contains an improper access control vulnerability which could allow for upload and execution of PHP code via the creation of new editor profiles for unauthenticated users.

Why

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Confirmed in the wild

CISA added this CVE to its Known Exploited Vulnerabilities catalogue on 2026-06-16.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Improper Access Control → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Not a CVSS 4.0 base metric
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-284 ↗

CWE-284: Improper Access Control. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/AU:Y/U:Red

Common Vulnerability Scoring System 4.0: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.ATNoneAttack requirements: No additional deployment or execution condition is required.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.VCHighVulnerable-system confidentiality: A successful attack can cause a major loss.VIHighVulnerable-system integrity: A successful attack can cause a major loss.VAHighVulnerable-system availability: A successful attack can cause a major loss.SCHighSubsequent-system confidentiality: A successful attack can cause a major loss.SIHighSubsequent-system integrity: A successful attack can cause a major loss.SAHighSubsequent-system availability: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-284CISA KEV
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2026-34789Known-exploited evidence recorded

A vulnerability in the JCE editor extension for Joomla allows the creation of new editor profiles for unauthenticated users, ultimately resulting in PHP code upload and execution.

Official EUVD record ↗
BSI · German · WID-SEC-2026-1997Widget Factory Joomla Content Editor: Schwachstelle ermöglicht Codeausführung

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Widget Factory Joomla Content Editor ausnutzen, um beliebigen Programmcode auszuführen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260610Security Bulletin 10 Jun 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 10 Jun 2026, published on 10 June 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CSIRT Italia · Italian · joomla-jce-rilevato-sfruttamento-cve-2026-48907-al-fine-di-distribuire-webshell-utilizzate-per-defacementJoomla JCE: rilevato sfruttamento CVE-2026-48907 al fine di distribuire webshell utilizzate per defacement

Questo CSIRT ha recentemente registrato, nel contesto nazionale, un aumento significativo di sfruttamenti attivi della CVE-2026-48907 – già sanata dal vendor e trattata nell’ambito dell’ AL02/260615/CSIRT-ITA – ai danni di server web esposti. Tale vulnerabilità interessa il plugin Joomla Content Editor (JCE), estensione per il noto Content Management System (CMS) Joomla!. L’analisi degli incidenti osservati evidenzia come, nella quasi totalità dei casi, lo sfruttamento della CVE-2026-48907 risulti finalizzato alla distribuzione di webshell, successivamente utilizzate per attività di defacement dei siti web compromessi. Dettagli inerenti alla vulnerabilità sfruttata Le evidenze raccolte indicano che gli attacchi osservati hanno visto lo sfruttamento della vulnerabilità CVE-2026-48907 – di tipo “ Improper Access Control ” e con score CVSS v4.0 pari a 10 – presente nell’endpoint / index.php?option=com_jce&task=profiles.import e dovuta a controlli di accesso non adeguati relativi alla funzionalità di importazione dei profili editor. In particolare, durante il processo di importazione: vengono effettuati controlli insufficienti sui file caricati; è possibile aggirare le restrizioni sui tipi di file; il componente consente il salvataggio di contenuti PHP in directory accessibili dal web. Un attaccante non autenticato può sfruttare tale vulnerabilità per creare nuovi profili JCE non autorizzati e abilitare il caricamento di file PHP opportunamente predisposti, ottenendo, potenzialmente, l’esecuzione di codice arbitrario sul server interessato . Distribuzione webshell e persistenza Lo sfruttamento in oggetto risulterebbe perpetrato al fine di installare plugin malevoli (aventi la capacità di apparire come normali estensioni di sistema Joomla) che hanno lo scopo di garantire all'attaccante un uploader persistente. Dopo l'installazione del plugin, Joomla esegue automaticamente la funzione postflight() , la quale decodifica il payload dell’attaccante e copia una webshell PHP in più percorsi del web server (probabilmente allo scopo di aumentare la resilienza): /about.php /images/about.php /media/about.php /templates/about.php /tmp/about.php Dettagli inerenti alla webshell utilizzata Si tratta una webshell minimale di tipo file uploader. Non contiene funzionalità di command execution, ma permette a un attaccante di caricare arbitrariamente file sul server. Le funzionalità incluse nella webshell sono le seguenti: Fingerprinting del sistema : tramite la funzione php_uname() , che consente all'attaccante di identificare Sistema operativo, Kernel, Architettura CPU e Hostname; Interfaccia di upload HTML : presenta un semplice form web per selezionare un file; Upload arbitrario di file : tramite la funzione copy() , che consente il caricamento di ulteriori file malevoli. Attività di defacement rilevate sul territorio nazionale L’impianto della webshell è stato sfruttato per portare a compimento attività di defacement ai danni di organizzazioni localizzate sul territorio nazionale. Di seguito, un’immagine esemplificativa di come si presentavano le pagine defacciate: Figura 1- Ricostruzione grafica rappresentativa delle attività di defacement osservate Criticità e superficie di esposizione Il caso trattato sottolinea, ancora una volta, quanto sia rischioso esporre servizi applicativi su Internet senza garantire un’adeguata protezione tramite misure di sicurezza e aggiornamenti costanti. Sistemi accessibili pubblicamente, ove non correttamente configurati o mantenuti, costituiscono infatti un vettore privilegiato per gli attaccanti, che possono sfruttare vulnerabilità note, configurazioni errate o di default per ottenere un punto di accesso nella rete dell’organizzazione. Figura 2-Esposizione nazionale di istanze Joomla! con plugin JCE L'analisi del contesto italiano (Figura 2) evidenzia una presenza non trascurabile di istanze Joomla!, che integrano il plugin Joomla Content Editor (JCE), accessibili da rete pubblica. Tale scenario delinea una superficie di esposizione che, nell'attuale ecosistema digitale, suggerisce un'attenzione costante alle configurazioni di sicurezza e un monitoraggio puntuale dei sistemi, al fine di favorire la resilienza degli asset interessati rispetto alle dinamiche evolutive delle minacce informatiche.

Official advisory ↗
CSIRT Italia · Italian · operational-summary-luglio-2026-1Operational Summary - luglio 2026

Torna l’appuntamento mensile di CSIRT Italia sull’analisi e l’andamento della minaccia cyber con l’elenco delle vulnerabilità informatiche più gravi.

Official advisory ↗
CSIRT Italia · Italian · operational-summary-giugno-2026Operational Summary - giugno 2026

Torna l’appuntamento mensile di CSIRT Italia sull’analisi e l’andamento della minaccia cyber con l’elenco delle vulnerabilità informatiche più gravi.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-020275Widget Factory LimitedのJCEにおけるアクセス制御に関する脆弱性

JoomlaのJCEエディター拡張機能に存在する脆弱性により、認証されていないユーザーが新しいエディタープロファイルを作成でき、最終的にPHPコードをアップロードして実行できます。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-6845美 CISA 발표 주요 Exploit 정보공유(Update. 2026-06-16)

Widget Factory Joomla Content Editor Improper Access Control Vulnerability

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
Joomla Content Editor (JCE) extension for Joomla: 1.0.0-2.9.99.4
Fixed
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 5 Jun 2026 · Last source change 20 Jun 2026, 11:56 UTC · CWE-284 · Improper Access Control

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-34789
Product sourceCISA KEV
Remediation sourceCVE/CNA references
CWE sourceCNA
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. BlackTree coverageBlackTree article coverage changed from no BlackTree article to 1 BlackTree article.
    Before
    no BlackTree article
    After
    1 BlackTree article
    BlackTree editorial ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    1.0.0-2.9.99.4 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    After
    Joomla Content Editor (JCE) extension for Joomla: 1.0.0-2.9.99.4 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-48907 · cve.blacktree.nl