CVE-2026-88647

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 63/100
Published: 2026-10-08 Modified: 2026-11-04 First seen: 2026-11-04 Status: active

Attack Surface

Network No Auth No Interaction Integ. Impact

CVSS Vector Breakdown

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

Description

GnuTLS v3.8.13 can perhaps unexpectedly trust a certificate on the basis of Common Name when Subject Alternative Name has an SRV otherName (1.3.6.1.5.5.7.8.7) whose value is an OCTET STRING. NOTE: the Supplier does not consider this an actionable security vulnerability because of its "threat model doesn't consider attacks only possible by modifying anything within the trust boundary (private keys, trusted certificate authorities and their issued certificates including intermediate CAs, etc.)" policy.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
n/a n/a n/a
n/a n/a n/a

Bug Bounty Relevance

63 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

6.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N

EPSS — Exploitation Probability

0.24%
Raw Score 0.002400
Percentile 15.2%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00240
2026-11-13
0.00240
2026-11-12
0.00240
2026-11-10
0.00240
2026-11-09
0.00240
2026-11-08
0.00240
2026-11-07
0.00240
2026-11-06
0.00240
2026-11-05
0.00240
2026-11-04
0.00240
2026-11-03
0.00208

Intelligence Sources

mitre ref →
nvd ref →