Sensitive Information Disclosure

undici is vulnerable to Sensitive Information Disclosure. The vulnerability is due to improper handling of malformed Cache-Control private directives, allowing private cached responses to be served to other callers or crafted headers to trigger an uncaught TypeError and potentially terminate the...

undici vulnerable to cross-user information disclosure and parse-time crash via degenerate private cache directives

Summary Two issues in undici's cache interceptor, both fixed by the same patch on lib/util/cache.js: 1. Shared-cache disclosure: Responses with malformed qualified Cache-Control: private directives such as private="" or private="," can be incorrectly stored in the default shared cache, then serve...

EUVD-2026-50409

undici vulnerable to cross-user information disclosure and parse-time crash via degenerate private cache directives...

GHSA-4CWX-7WF7-3272 undici vulnerable to cross-user information disclosure and parse-time crash via degenerate private cache directives

Summary Two issues in undici's cache interceptor, both fixed by the same patch on lib/util/cache.js: 1. Shared-cache disclosure: Responses with malformed qualified Cache-Control: private directives such as private="" or private="," can be incorrectly stored in the default shared cache, then serve...

CVE-2026-13697

undici's cache interceptor mishandles malformed Cache-Control private directives. In undici 7.0.0 up to before 7.29.0 and 8.0.0 up to before 8.9.0, a response carrying a degenerate qualified private directive, such as private set to an empty value, can be stored in the default shared cache and...

CVE-2026-13697

undici's cache interceptor mishandles malformed Cache-Control private directives. In undici 7.0.0 up to before 7.29.0 and 8.0.0 up to before 8.9.0, a response carrying a degenerate qualified private directive, such as private set to an empty value, can be stored in the default shared cache and...

CVE-2026-13697 undici vulnerable to cross-user information disclosure and parse-time crash via degenerate private cache directives

undici's cache interceptor mishandles malformed Cache-Control private directives. In undici 7.0.0 up to before 7.29.0 and 8.0.0 up to before 8.9.0, a response carrying a degenerate qualified private directive, such as private set to an empty value, can be stored in the default shared cache and...

CVE-2026-13697

undici's cache interceptor mishandles malformed Cache-Control private directives. In undici 7.0.0 up to before 7.29.0 and 8.0.0 up to before 8.9.0, a response carrying a degenerate qualified private directive, such as private set to an empty value, can be stored in the default shared cache and...

CVE-2026-13697

Summary of a known vulnerability in undici (CVE-2026-13697) : The cache interceptor in undici mishandles degenerate private directives in Cache-Control, enabling two issues in shared mode. First, a response with malformed qualified private directives (for example, private="" or private=",") can b...

CVE-2026-13697 undici vulnerable to cross-user information disclosure and parse-time crash via degenerate private cache directives

undici's cache interceptor mishandles malformed Cache-Control private directives. In undici 7.0.0 up to before 7.29.0 and 8.0.0 up to before 8.9.0, a response carrying a degenerate qualified private directive, such as private set to an empty value, can be stored in the default shared cache and...

PT-2026-65840

Name of the Vulnerable Software and Affected Versions undici versions 7.0.0 through 7.28.x undici versions 8.0.0 through 8.8.x Description The cache interceptor mishandles malformed Cache-Control private directives when used in shared mode. A degenerate qualified private directive, such as privat...

PT-2026-50515

Name of the Vulnerable Software and Affected Versions undici versions prior to 7.28.0 undici versions prior to 8.5.0 Description The cache interceptor incorrectly classifies certain responses as cacheable when the upstream Cache-Control header contains whitespace-padded qualified private or...