Vulnerability Description
http-cache-semantics through 4.2.0 fails to properly validate security-zeroed cache entries when processing client max-stale directives, allowing unauthenticated attackers to retrieve cached responses belonging to other users. Attackers can request the same URL with a large max-stale value to obtain another user's Set-Cookie session credentials from shared-cache entries that were deliberately zeroed for security reasons.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/kornelski/http-cache-semantics
- https://github.com/kornelski/http-cache-semantics/blob/f01112e954b83cfa8765b633b
- https://github.com/kornelski/http-cache-semantics/blob/f01112e954b83cfa8765b633b
- https://github.com/kornelski/http-cache-semantics/issues/56
- https://www.vulncheck.com/advisories/http-cache-semantics-through-4.2.0-cross-us
- https://github.com/kornelski/http-cache-semantics/issues/56
FAQ
What is CVE-2026-93748?
CVE-2026-93748 is a vulnerability with a CVSS score of 7.5 (HIGH). http-cache-semantics through 4.2.0 fails to properly validate security-zeroed cache entries when processing client max-stale directives, allowing unauthenticated attackers to retrieve cached responses...
How severe is CVE-2026-93748?
CVE-2026-93748 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-93748?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.