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TI-2026-76880 Aliases CVE-2026-113470GHSA-vr39-qqr3-x9v4

Cryptographic issue in Mozilla Firefox and Thunderbird state component

Priority LOW 25CWE-295Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Spoofing
Confidentiality · integrity · availability
Low · Low · None
Fix status
Partial Red Hat: 4 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-295.

Summary

Mozilla Firefox and Thunderbird are affected by a cryptographic issue in the Security Block-lists, Allow-lists, and other State component (CWE-295, improper certificate validation). A remote attacker without privileges needs a user to interact with the product to read and modify some data.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Cryptographic issue in the Security Block-lists, Allow-lists, and other State component. This vulnerability was fixed in Firefox 158.0.1, Firefox ESR 153.5.1, Firefox ESR 115.43.1, Thunderbird 158.0.1, Thunderbird 153.5.1, and Firefox 158.0.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0046 40th percentileScored 2026-11-07
Fix Partial Firefox (Mozilla): 115.43.1, 153.5.1, 158.0.1 +1Thunderbird (Mozilla): 153.5.1, 158.0.1Red Hat: 4 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
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—115.43.1, 153.5.1, 158.0.1, 158.0.2Patch availableCNA
MozillaThunderbird—153.5.1, 158.0.1Patch availableCNA
  • Firefox VendorMozilla Affected — Fixed in 115.43.1, 153.5.1, 158.0.1, 158.0.2 Patch available CNA
  • Thunderbird VendorMozilla Affected — Fixed in 153.5.1, 158.0.1 Patch available CNA

CPE names Threatist (inferred) · 2

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

Remediation

Update Firefox to 115.43.1 (ESR), 153.5.1 (ESR), 158.0.1 or 158.0.2, and Thunderbird to 153.5.1 or 158.0.1. Red Hat rates the issue Moderate and lists Red Hat Enterprise Linux 7, 8, 9 and 10 as affected with no fix available.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA Firefox (Mozilla) Fixed in 115.43.1, 153.5.1, 158.0.1, 158.0.2
  • Fix · CNA Thunderbird (Mozilla) Fixed in 153.5.1, 158.0.1

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux 8AffectedNo fix yet
Red Hat Enterprise Linux 9AffectedNo fix yet

Timeline

  1. 2026-10-20 Threatist record created from CVE-2026-113470
  2. 2026-10-20 Alias added: GHSA-vr39-qqr3-x9v4
  3. 2026-10-20 Fix available: Mozilla/[email protected], Mozilla/[email protected] · CNA
  4. 2026-10-20 2 new references · CNA
  5. 2026-10-21 Affected versions changed · Red Hat
  6. 2026-10-21 CVSS score added · Red Hat
  7. 2026-10-21 Fix available: Mozilla/[email protected] · CNA
  8. 2026-10-21 2 new references · CNA
  9. 2026-10-22 Affected versions changed · Red Hat
  10. 2026-10-22 CVSS score changed · Red Hat

References

Other 7

  • 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