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Full vulnerability report · 2026
CVE-2026-17809High confidence

Google Chrome — Improper Input Validation

Google · Chrome

5.8MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

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-2026-50758

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 actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified
01

What, why and how

Insufficient validation of untrusted input in Extensions in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)

What

Insufficient validation of untrusted input in Extensions in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)

Why

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

How

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

What

Insufficient validation of untrusted input in Extensions in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)

Why

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

How

An attacker operating through a network path may attempt exploitation without authentication after a 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 Input Validation → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
Required interaction required
Attack complexity
High: exploitation depends on specific conditions
Security boundary
Changed: exploitation can affect a different security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-20

CWE-20: Improper Input Validation. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

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:H/PR:N/UI:R/S:C/C:L/I:L/A:L

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.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SChangedScope: The attack can affect a component governed by a different security authority.CLowConfidentiality impact: A successful attack can cause a limited loss.ILowIntegrity impact: A successful attack can cause a limited loss.ALowAvailability impact: A successful attack can cause a limited 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-20
A

Official authority intelligence

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

BSI · German · WID-SEC-W-2026-2579Google Chrome/Microsoft Edge: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Google Chrome/Microsoft Edge ausnutzen, um beliebigen Code auszuführen, vertrauliche Informationen offenzulegen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder einen Denial-of-Service-Zustand herbeizuführen.

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0960Multiples vulnérabilités dans Microsoft Edge

rité Microsoft Edge CVE-2026-17800 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17801 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17802 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17803 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17804 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17805 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17806 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17807 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17808 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17809 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17810 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17811 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17812 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17813 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17814 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17815 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17816 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17817 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17818 du 31 juillet 2026

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0945Multiples vulnérabilités dans Google Chrome

d?id=CVE-2026-17800 Référence CVE CVE-2026-17801 https://www.cve.org/CVERecord?id=CVE-2026-17801 Référence CVE CVE-2026-17802 https://www.cve.org/CVERecord?id=CVE-2026-17802 Référence CVE CVE-2026-17803 https://www.cve.org/CVERecord?id=CVE-2026-17803 Référence CVE CVE-2026-17804 https://www.cve.org/CVERecord?id=CVE-2026-17804 Référence CVE CVE-2026-17805 https://www.cve.org/CVERecord?id=CVE-2026-17805 Référence CVE CVE-2026-17806 https://www.cve.org/CVERecord?id=CVE-2026-17806 Référence CVE CVE-2026-17807 https://www.cve.org/CVERecord?id=CVE-2026-17807 Référence CVE CVE-2026-17808 https://www.cve.org/CVERecord?id=CVE-2026-17808 Référence CVE CVE-2026-17809 https://www.cve.org/CVERecord?id=CVE-2026-17809 Référence CVE CVE-2026-17810 https://www.cve.org/CVERecord?id=CVE-2026-17810 Référence CVE CVE-2026-17811 https://www.cve.org/CVERecord?id=CVE-2026-17811 Référence CVE CVE-2026-17812 https://www.cve.org/CVERecord?id=CVE-2026-17812 Référence CVE CVE-2026-17813 https://www.cve.org/CVERecord?id=CVE-2026-17813 Référence CVE CVE-2026-17814 https://www.cve.org/CVERecord?id=CVE-2026-17814 Référence CVE CVE-2026-17815 https://www.cve.org/CVERecord?id=CVE-2026-17815 Référence CVE CVE-2026-17816 https://www.cve.org/CVERecord?id=CVE-2026-17816 Référence CVE CVE-2026-17817 https://www.cve.org/CVERecord?id=

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
151.0.7922.72 < 151.0.7922.72
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 30 Jul 2026 · Last source change 31 Jul 2026, 14:05 UTC · CWE-20 · Improper Input Validation

CVE recordCVE.org · 5.2
CVSS sourceCISA ADP
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-2026-50758
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 →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

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-2026-17809 · cve.blacktree.nl