Vulnpedia
← Search CVEs

CVE-2026-113470

MEDIUM 5.4

Published 2026-10-20 · Last modified 2026-10-21

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.

NO EXPLOITATION SIGNALS

No known exploitation, public exploit, or elevated probability at this time. Track for changes.

Exploitation likelihood

0.5%chance of exploitation in 30 days · 40th percentile

○ In CISA KEV ○ Catalogued PoC

Impact if exploited

5.4CVSS 3.1 · MEDIUM

  • ConfidentialityLow
  • IntegrityLow
  • AvailabilityNone

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ✓Privileges: No account or privileges required
  • ⚠User interaction: A user must take an action (click / open a file)
  • ✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot:

Affected

Vendors Mozilla

Products Firefox Thunderbird

Weakness (CWE)

  • CWE-295: Improper Certificate Validation

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

References and research data (JSON)

Vendor product assessments

  • firefox as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/firefox

    • none available: Affected
    Red Hat · CVE-2026-113470 · Updated 2026-10-21T19:43:09+00:00
  • firefox.src as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/firefox?arch=src

    • none available: Affected
    Red Hat · CVE-2026-113470 · Updated 2026-10-21T19:43:09+00:00
  • rhel10/firefox-flatpak as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:oci/firefox-flatpak?repository_url=registry.redhat.io/rhel10/firefox-flatpak

    • none available: Affected
    Red Hat · CVE-2026-113470 · Updated 2026-10-21T19:43:09+00:00
  • firefox as a component of Red Hat Enterprise Linux 7 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/firefox

    • none available: Affected
    Red Hat · CVE-2026-113470 · Updated 2026-10-21T19:43:09+00:00
  • firefox.src as a component of Red Hat Enterprise Linux 7 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/firefox?arch=src

    • none available: Affected
    Red Hat · CVE-2026-113470 · Updated 2026-10-21T19:43:09+00:00
  • firefox as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/firefox

    • none available: Affected
    Red Hat · CVE-2026-113470 · Updated 2026-10-21T19:43:09+00:00
  • firefox.src as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/firefox?arch=src

    • none available: Affected
    Red Hat · CVE-2026-113470 · Updated 2026-10-21T19:43:09+00:00
  • firefox as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/firefox

    • none available: Affected
    Red Hat · CVE-2026-113470 · Updated 2026-10-21T19:43:09+00:00
  • firefox-x11 as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/firefox-x11

    • none available: Affected
    Red Hat · CVE-2026-113470 · Updated 2026-10-21T19:43:09+00:00
  • firefox.src as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/firefox?arch=src

    • none available: Affected
    Red Hat · CVE-2026-113470 · Updated 2026-10-21T19:43:09+00:00

All CVSS metrics

  • MEDIUM 5.4 v3.1 · ADP Primary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
  • MEDIUM 5.4 v3.1 · NVD Secondary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

References

Advisories

Technical & other

Sources: NVD · CVE.org · EPSS