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Full vulnerability report · 2026
CVE-2026-7557High confidence

SAML authentication bypass in Progress MarkLogic Server

Progress Software Corporation · MarkLogic Server

9.1CriticalCVSS 3.1
Recommended action
Within 72 hours

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded.

Fix not verified
Optional official sources

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

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

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-2026-53424

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 72 hours

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded.

Fix not verified
01

What, why and how

An improper verification of cryptographic signature vulnerability in the SAML authentication module of Progress MarkLogic Server before 11.3.6 and 12.0.3 allows an unauthenticated remote attacker to bypass authentication and impersonate any user, including administrators. This vulnerability affects deployments with SAML single sign-on enabled.

What

An improper verification of cryptographic signature vulnerability in the SAML authentication module of Progress MarkLogic Server before 11.3.6 and 12.0.3 allows an unauthenticated remote attacker to bypass authentication and impersonate any user, including administrators. This vulnerability affects deployments with SAML single sign-on enabled.

Why

The product does not verify, or incorrectly verifies, the cryptographic signature for data.

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

An improper verification of cryptographic signature vulnerability in the SAML authentication module of Progress MarkLogic Server before 11.3.6 and 12.0.3 allows an unauthenticated remote attacker to bypass authentication and impersonate any user, including administrators. This vulnerability affects deployments with SAML single sign-on enabled.

Why

The product does not verify, or incorrectly verifies, the cryptographic signature for data.

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.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

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 Verification of Cryptographic Signature → 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
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-347 ↗

CWE-347: Improper Verification of Cryptographic Signature. The product does not verify, or incorrectly verifies, the cryptographic signature for data.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Common Vulnerability Scoring System 3.1: 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.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.ANoneAvailability impact: No direct loss is represented by this metric.
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-347
A

Official authority intelligence

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

Canadian Centre for Cyber Security · English · AV26-781Progress security advisory (AV26-781)

As of August 5, 2026, Progress Software Corporation is affected by vulnerabilities in the following product:

Official advisory ↗
CSIRT Italia · Italian · progress-software-aggiornamenti-di-sicurezza-8Progress Software: aggiornamenti di sicurezza

Progress Software ha rilasciato aggiornamenti di sicurezza al fine di correggere 10 vulnerabilità di sicurezza, di cui 7 con gravità "critica" e 3 con gravità "alta", in MarkLogic Server, piattaforma NoSQL multi-model enterprise per l'archiviazione, la ricerca e la gestione di dati XML, JSON e documentali.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-031847Progress Software CorporationのMarkLogic Serverにおける権限管理に関する脆弱性

Progress MarkLogic Serverのバージョン11.3.6および12.0.3未満には、SQL、SPARQL、およびOptic RESTクエリインターフェースにおいて不適切な権限管理の脆弱性が存在します。この脆弱性により、低権限のRESTロールを持つ認証済みユーザーが権限を昇格させ、管理者権限を取得できる可能性があります。これによって、特権操作を実行したり不正にデータへアクセスしたりすることが可能になります。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-031846Progress Software CorporationのMarkLogic Serverにおけるデジタル署名の検証に関する脆弱性

Progress MarkLogic Serverの11.3.6および12.0.3以前のSAML認証モジュールにおいて、暗号署名の検証が不適切に行われる脆弱性が存在します。この脆弱性により、認証されていないリモートの攻撃者が認証を回避し、管理者を含む任意のユーザーになりすますことが可能です。また、この脆弱性はSAMLシングルサインオンが有効な環境に影響を及ぼします。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-031844Progress Software CorporationのMarkLogic Serverにおける権限管理に関する脆弱性

Progress MarkLogic Serverのバージョン11.3.6および12.0.3より前のREST APIドキュメントパッチ操作における不適切な権限管理の脆弱性により、低権限のRESTロールを持つ認証済みユーザーが権限を昇格させ、Securityデータベースに対して特権操作を実行できるようになります。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-031843Progress Software CorporationのMarkLogic ServerにおけるHTTP リクエストスマグリングに関する脆弱性

Progress MarkLogic ServerのHTTP App Serverには、バージョン11.3.6および12.0.3より前のバージョンでHTTPリクエストスマグリングの脆弱性が存在します。この脆弱性により、リモートの攻撃者が認証および認可チェックを回避できたり、正当なユーザーのセッションを乗っ取ったり、資格情報を盗み取ったりすることが可能です。脆弱性は、Content-LengthとTransfer-Encodingの両方のヘッダーを含む巧妙に作成されたHTTPリクエストがリバースプロキシとMarkLogic Serverでリクエスト境界の解釈に齟齬を生じさせた場合に発生します。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-031842Progress Software CorporationのMarkLogic Serverにおける認証に関する脆弱性

Progress MarkLogic ServerのODBCアプリサーバーにおける認証バイパスの脆弱性（バージョン11.3.6および12.0.3以前）により、認証されていないリモート攻撃者がパスワード検証を回避し、管理者を含むサーバーに認識されている任意の名前付きユーザーの権限でクエリを実行できる可能性があります。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-031841Progress Software CorporationのMarkLogic Serverにおける権限管理に関する脆弱性

Progress MarkLogic Serverの11.3.6および12.0.3以前のHadoop統合における不適切な権限管理の脆弱性により、低権限のHadoopロールを持つ認証済みユーザーが権限を昇格させ、Securityデータベースに対して特権操作を実行できる可能性があります。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-031840Progress Software CorporationのMarkLogic Serverにおける複数の脆弱性

Progress MarkLogic Serverのバージョン11.3.6以前および12.0.3以前のQuery Consoleにはクロスサイトスクリプティングの脆弱性が存在します。この脆弱性により、認証された管理者を細工されたURLに誘導したリモート攻撃者は、管理者のブラウザセッション内で任意のJavaScriptを実行でき、資格情報を取得し、管理者の権限で特権操作を実行することが可能になります。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-031849Progress Software CorporationのMarkLogic Serverにおけるクロスサイトリクエストフォージェリの脆弱性

Progress MarkLogic Serverのバージョン11.3.6以前および12.0.3以前の管理者UIには、クロスサイトリクエストフォージェリの脆弱性があります。この脆弱性により、認証済みの管理者が悪意のあるウェブページに誘導されると、リモート攻撃者がその管理者になりすまして管理操作を実行できる可能性があります。その結果、セキュリティ設定が不正に変更される恐れがあります。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-031848Progress Software CorporationのMarkLogic Serverにおける権限管理に関する脆弱性

Progress MarkLogic Serverのバージョン11.3.6以前および12.0.3以前におけるREST APIドキュメント処理パイプラインの不適切な権限管理の脆弱性により、管理者用RESTロールを持つ認証済みユーザーが権限昇格を行うことが可能です。これにより、より高い権限を持つユーザーがアクセスした場合に、サーバー側の機密データが不正に漏洩するおそれがあります。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-031839Progress Software CorporationのMarkLogic Serverにおけるサーバサイドのリクエストフォージェリの脆弱性

Progress MarkLogic Serverのバージョン11.3.6および12.0.3より前のバージョンには、サーバーサイドリクエストフォージェリの脆弱性が存在します。この脆弱性により、低権限の認証済みユーザーがクラウドインスタンスのメタデータエンドポイントの保護を回避できる可能性があります。攻撃が成功すると、クラウドの認証情報が漏洩し、ホストインスタンスからアクセス可能なクラウドリソースが侵害される恐れがあります。

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.
Fix not verified
Affected
MarkLogic Server: 11.0.0 < 11.3.6, 12.0.0 < 12.0.3
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
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 Aug 2026 · Last source change 7 Aug 2026, 03:55 UTC · CWE-347 · Improper Verification of Cryptographic Signature

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-2026-53424
Product sourceCNA
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. Vendor guidanceAuthoritative vendor guidance changed from no authoritative guidance recorded to vendor advisory.
    Before
    no authoritative guidance recorded
    After
    vendor advisory
    security@progress.com ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2026-53424↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
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-2026-7557 · cve.blacktree.nl