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[GHSA-ch52-4w7c-c8xp] http-cache-semantics max-stale handling can disclose cross-user cached responses #10184

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[GHSA-ch52-4w7c-c8xp] http-cache-semantics max-stale handling can disclose cross-user cached responses #10184

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22 changes: 15 additions & 7 deletions advisories/github-reviewed/2026/09/GHSA-ch52-4w7c-c8xp/GHSA-ch52-4w7c-c8xp.json
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Original file line number Diff line number Diff line change
@@ -1,18 +1,14 @@
{
"schema_version": "1.4.0",
"id": "GHSA-ch52-4w7c-c8xp",
"modified": "2026-10-02T22:36:42Z",
"modified": "2026-10-02T22:36:44Z",
"published": "2026-09-18T18:31:44Z",
"aliases": [
"CVE-2026-93748"
],
"summary": "http-cache-semantics max-stale handling can disclose cross-user cached responses",
"details": "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.",
"details": "http-cache-semantics through 4.3.0 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.",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
Expand All @@ -32,7 +28,7 @@
"introduced": "0"
},
{
"last_affected": "4.2.0"
"last_affected": "4.3.0"
}
]
}
Expand All @@ -52,6 +48,14 @@
"type": "PACKAGE",
"url": "https://github.com/kornelski/http-cache-semantics"
},
{
"type": "WEB",
"url": "https://github.com/kornelski/http-cache-semantics/blob/b1d4bd682fbab0252985de45219f4e7497c0067c/index.js#L395-L443"
},
{
"type": "WEB",
"url": "https://github.com/kornelski/http-cache-semantics/blob/b1d4bd682fbab0252985de45219f4e7497c0067c/index.js#L622-L645"
},
{
"type": "WEB",
"url": "https://github.com/kornelski/http-cache-semantics/blob/f01112e954b83cfa8765b633ba880e5e980aa54c/index.js#L425-L441"
Expand All @@ -60,6 +64,10 @@
"type": "WEB",
"url": "https://github.com/kornelski/http-cache-semantics/blob/f01112e954b83cfa8765b633ba880e5e980aa54c/index.js#L603-L623"
},
{
"type": "WEB",
"url": "https://registry.npmjs.org/http-cache-semantics/-/http-cache-semantics-4.3.0.tgz"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/http-cache-semantics-through-4.2.0-cross-user-cache-disclosure-via-max-stale"
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