CVE-2026-88648: n/a
Description
An incomplete X.509 implementation in GnuTLS version 3.8.13 allows attackers who control a subordinate Certificate Authority to bypass cross-domain Public Key Infrastructure (PKI) restrictions and issue unauthorized certificates.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-88648 describes a vulnerability in GnuTLS v3.8.13 where the X.509 implementation is incomplete. This flaw enables attackers with control over a subordinate Certificate Authority to circumvent cross-domain PKI restrictions, potentially allowing them to issue certificates that are not authorized by the legitimate PKI hierarchy.
Potential Impact
Attackers controlling a subordinate Certificate Authority can exploit this vulnerability to issue unauthorized certificates, undermining the trust model of PKI and potentially enabling man-in-the-middle attacks or impersonation across domains that should be isolated by PKI restrictions.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-09-10T00:00:00.000Z
- State
- PUBLISHED
Threat ID: 6ac7fef32cdf04f656318c10
Added to database: 10/08/2026, 20:37:07 UTC
Last enriched: 10/08/2026, 20:48:54 UTC
Last updated: 10/08/2026, 20:48:54 UTC
Views: 8
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