CVE-2026-109751CWE-200information-disclosure

CVE-2026-109751

Medium · published October 13, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
16.7
In the wild
Unconfirmed
What it is

Information disclosure in the Networking component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00260 · 16.7th percentile
Weakness
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2026-10-13T17:17Z
References (5)
https://bugzilla.mozilla.org/show_bug.cgi?id=2068372 · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-106/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-108/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-109/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-110/ · [email protected]
EPSS history
Timeline
  • 15 OCT 03:28Z
    EPSS moved — → 0%
    epss
  • 13 OCT 12:29Z
    Information disclosure in the Networking component
    cvelistv5
  • 13 OCT 12:29Z
    Information disclosure in the Networking component
    cvelistv5