CVE-2026-12291

INFO Priority: 0.00 BB Relevance: 0/100
Published: 2026-06-16 Modified: 2026-10-26 First seen: 2026-10-29 Status: pending_score

Description

Use-after-free in the Networking: HTTP component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.

Weakness Classification (2)

Affected Software (5)

VendorProductVersion
mozilla firefox < 115.37.0
mozilla firefox < 152.0.0
mozilla firefox 128.0 – 140.12.0
mozilla thunderbird < 140.12.0
mozilla thunderbird < 152.0.0

Bug Bounty Relevance

0 / 100

CVSS Score

Unscored

EPSS — Exploitation Probability

0.38%
Raw Score 0.003820
Percentile 32.1%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00382
2026-10-28
0.00382

Intelligence Sources

nvd ref →