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TI-2026-81352 Aliases CVE-2026-118027GHSA-38v7-8p8g-jfff

Frame poisoning in the Mozilla Firefox Layout component

Priority MEDIUM 45CWE-451Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Spoofing
Confidentiality · integrity · availability
None · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-451.

Summary

Mozilla Firefox is affected by frame poisoning in its Layout component. The flaw is classified as CWE-451, a misrepresentation of critical information in the user interface. A remote attacker with no privileges and no user interaction can affect the integrity and availability of the browser.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

Frame poisoning in the Layout component. This vulnerability was fixed in Firefox ESR 115.44.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00256 17th percentileScored 2026-11-07
Fix Fixed Firefox (Mozilla): 115.44

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaFirefox—115.44Patch availableCNA
  • Firefox VendorMozilla Affected — Fixed in 115.44 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*——Mozilla
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions — — ·Mozilla

Remediation

Upgrade Firefox ESR to version 115.44, which fixes this flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

  • Fix · CNA Firefox (Mozilla) Fixed in 115.44

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

Not affected: 5 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-27 Threatist record created from CVE-2026-118027
  2. 2026-10-27 Alias added: GHSA-38v7-8p8g-jfff
  3. 2026-11-03 Affected versions changed · Red Hat
  4. 2026-11-03 CVSS score added · Red Hat
  5. 2026-11-04 CVSS score added · CISA ADP
  6. 2026-11-04 Weakness changed · CISA ADP
  7. 2026-11-04 CISA SSVC decision points changed
  8. 2026-11-04 Priority changed: LOW → MEDIUM

References

Other 2

  • TI-2024-08981 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
  • TI-2019-08769 Improper input validation in Mozilla Firefox ESR KEVCVSS 3.1CRITICAL 10.0
  • TI-2010-03577 Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before… KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
  • TI-2023-04477 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
See all 4204 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences