CVE-2026-3832

Summary

A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online Certificate Status Protocol (OCSP) response during a TLS handshake. Due to a logic error in how gnutls processes multi-record OCSP responses, a client with OCSP verification enabled may incorrectly accept a revoked server certificate, potentially leading to a compromise of trust.

Affected Software

VendorProductVersion RangeStatus
0 < 3.8.13affected
Red HatRed Hat Enterprise Linux 100:3.8.10-4.el10_2 < *unaffected
Red HatRed Hat Enterprise Linux 10.0 Extended Update Support0:3.8.9-9.el10_0.19 < *unaffected
Red HatRed Hat Enterprise Linux 90:3.8.10-4.el9_8 < *unaffected
Red HatRed Hat Enterprise Linux 90:3.8.10-4.el9_8 < *unaffected
Red HatRed Hat Discovery 21782159791 < *unaffected
Red HatRed Hat Discovery 21782166952 < *unaffected
Red HatRed Hat Hardened Images3.8.13-1.hum1 < *unaffected
Red HatRed Hat Update Infrastructure 51781525684 < *unaffected
Red HatRed Hat Update Infrastructure 51781525671 < *unaffected
Red HatRed Hat Update Infrastructure 51781525693 < *unaffected
Red HatRed Hat Update Infrastructure 51781525739 < *unaffected

Weaknesses

  • CWE-179: Incorrect Behavior Order: Early Validation

Workarounds

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: no
    • Technical Impact: partial

Additional References

References