PULSE
ES
FEED
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CVE WatchOct 19, 2026

CVE-2026-88648

Incomplete X.509 implementation in GnuTLS v3.8.13 allows attackers controlling a subordinate Certificate Authority to bypass cross-domain PK

CVSS

3.7

Low

EPSS

0.2%

p10

KEV

—

Exploit Today

3

0-100

Published: Oct 8, 2026 · Last modified: Oct 19, 2026

EPSS · 30d
0.1%EPSS · 30 days0.2%
2026-10-092026-10-25
Technical description

Incomplete X.509 implementation in GnuTLS v3.8.13 allows attackers controlling a subordinate Certificate Authority to bypass cross-domain PKI restrictions and issue unauthorized certificates.

Official references
Related CVEs

No related CVEs by CWE or product.