CVE-2026-88647
Critical · 9.1CVSS
9.1
EPSS
0.2%
Published
Oct 8, 2026
CISA due date
—
The record
A hostname verification bypass in GnuTLS v3.8.13 allows attackers to circumvent the Common Name fallback mechanism and eavesdrop on communications via a crafted certificate.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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