CVE-2026-90996

Summary

A flaw was found in sssd. A local unprivileged user could send a specially crafted request with a zero-length body to the Network Security Services (NSS) responder. This could lead to a denial-of-service condition, causing the NSS responder to become unstable or terminate. This vulnerability affects the availability of the system responder.

Affected Software

Weaknesses

• CWE-191: Integer Underflow (Wrap or Wraparound)

Workarounds

There's no appropriated mitigation for this issue.

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://access.redhat.com/security/cve/CVE-2026-90996
• https://bugzilla.redhat.com/show_bug.cgi?id=2478986

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