Skip to content
Fencer Vulns
medium 6.5

CVE-2026-11206 json

Insufficient policy enforcement in ServiceWorker in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin dat…

published 2026-06-04 5 mo ago modified 2026-07-23 3 mo ago also EUVD-2026-34667

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 13%
public exploits
0
none known

Summary

Insufficient policy enforcement in ServiceWorker in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)

Patch / fix

  • google chrome 149.0.7827.53
  • chromium Debian 12 149.0.7827.53-1~deb12u1
  • chromium Debian 13 149.0.7827.53-1~deb13u1
  • chromium Debian 14 149.0.7827.53-1

debian advisories DEBIAN-CVE-2026-11206

  • chromium openSUSE Leap 16.0 149.0.7827.155-bp160.1.1
  • chromium openSUSE Tumbleweed 149.0.7827.53-2.1

opensuse advisories openSUSE-SU-2026:21135-1openSUSE-SU-2026:10958-1

  • qt6-qtwebengine Alpine 3.24 6.11.1-r3

alpine advisories ALPINE-CVE-2026-11206

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-11206 updated cvss 6.5

chromium-browser: Policy bypass in ServiceWorker

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
5 mo ago

Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected products

  • Google Chrome

Classification

Weakness
  • CWE-693 Protection Mechanism Failure
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.