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UK Cyber Defence
VulnerabilityAwaiting Analysis

CVE-2026-113470

Cryptographic issue in the Security Block-lists, Allow-lists, and other State component.

MEDIUM 5.4EPSS 0.46%

Does this matter?

Lower severity and a low EPSS score (0.46%). Track it; it rarely justifies an emergency change on its own.

Description

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.

CVSS 3.1
5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
EPSS
0.46% probability · 40th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-295
Source
security@mozilla.org
EPSS trend
0%3%5%21 October 2026: 0.20%27 October 2026: 0.46%21 October 202627 October 2026

EPSS moved from 0.2% on 21 October 2026 to 0.5% on 27 October 2026.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.