Improper Authorization Affecting http-cache-semantics package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-JS-HTTPCACHESEMANTICS-19964068
- published20 Sept 2026
- disclosed18 Sept 2026
- creditWayde Shi
Introduced: 18 Sep 2026
NewCVE-2026-93748 (opens in a new tab)How to fix?
There is no fixed version for http-cache-semantics.
Overview
Affected versions of this package are vulnerable to Improper Authorization via improper validation of security-zeroed cache entries when processing client max-stale directives. An unauthenticated attacker can request the same URL with a large max-stale value to retrieve cached responses belonging to other users, including Set-Cookie session credentials from shared-cache entries that were deliberately zeroed for security reasons.