CVE-2026-111943

MEDIUM
MEDIUM Priority: 0.03 BB Relevance: 54/100
Published: 2026-10-21 Modified: 2026-10-30 First seen: 2026-10-29 Status: active

Attack Surface

Network No Auth Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: Required
S: Unchanged
C: High
I: High
A: None

Description

On most platforms, Go uses the given system root certificates. However, in some narrower cases, the system trust stores may not be updated without further action. To defend against the narrower set of cases that may remain affected, a denylist was added in crypto/x509 to return an error when calling Verify with any of the known intermediate certificates that are no longer considered to be trustworthy.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
Go standard library crypto/x509 0 < 1.26.10
Go standard library crypto/x509 1.27.0-0 < 1.27.3

Bug Bounty Relevance

54 / 100
✓ Network accessible
✓ No authentication

CVSS Score

6.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

EPSS — Exploitation Probability

0.40%
Raw Score 0.003960
Percentile 33.8%
Date 2026-11-01

EPSS Trend

2026-11-01
0.00396
2026-10-31
0.00396
2026-10-30
0.00299
2026-10-29
0.00299
2026-10-28
0.00299

Intelligence Sources

mitre ref →
nvd ref →