4.3

CVE-2026-5911: google chrome Protection Mechanism Failure

Modified
AliasesDEBIAN-CVE-2026-5911CGA-j69j-hw8h-25qmCGA-mfhq-vx34-32r3
Published 08-04-2026Last modified 10-05-2026

Vulnerability summary

CVE-2026-5911 is a medium (CVSS 4.3) Protection Mechanism Failure vulnerability in google chrome. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 5.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 4.3, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
4.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.17%
0%100%
Low · -0.09 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 4
OPENSUSE-SU-2026:10530-1OPENSUSE-SU-2026:20575-1OPENSUSE-SU-2026:20660-1CGA-75J4-69FM-W72Q

Timeline

  1. 08-04-2026
    PublishedVulnerability first disclosed.
  2. 10-05-2026
    Last modifiedVulnerability information updated.

Description

Policy bypass in ServiceWorkers in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to bypass content security policy via a crafted HTML page. (Chromium security severity: Low)

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

Decrease -0.09 pp

From 0.25% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Alpine1 product
  • qt6-qtwebengine< 6.11.0-r6
Chainguard1 product
  • chromium< 147.0.7727.101-r0
Debian1 product
  • chromium< 147.0.7727.55-1~deb12u1 | < 147.0.7727.55-1~deb13u1 | < 147.0.7727.55-1
Google1 product
  • chrome≥ 147.0.7727.55, < 147.0.7727.55 | < 147.0.7727.55
Wolfi1 product
  • chromium< 147.0.7727.101-r0

5 vendors · 5 products

References

4 links