undici's cache interceptor does not handle the Set-Cookie response header anywhere in its cache path, so it neither refuses to store nor strips that header. In shared cache mode, which is the default, an otherwise cacheable response that carries a Set-Cookie header, for example one marked with a public and max-age directive, is stored and then re-served to a later caller that matches the same cache key. As a result one caller's cookie is disclosed to a different caller, and an untrusted server can inject cookies into cached responses served to all subsequent callers. This violates the requirement that a shared cache must not store cookies. This affects undici versions from 7.0.0 up to 7.29.1 and from 8.0.0 up to 8.10.2. Users should upgrade to undici 7.29.1 or 8.10.2.

pi-coding-agent-0.87.1-1.1 on GA media

brace-expansion: Brace-expansion: Denial of Service via memory exhaustion in expand() function undici: undici: Denial of Service due to orphaned response body in retry handler brace-expansion: DoS via unbounded intermediate arrays, bypassing the CVE-2026-14257 mitigation undici: undici: Denial of Service via unbounded decompression of compressed responses undici: undici: Cross-user cookie disclosure via Set-Cookie caching undici: Undici: Response truncation and connection termination undici: undici: Integrity failure due to caching of unsafe HTTP method responses undici: undici: Denial of Service via WebSocketStream unclean close undici: undici: Authentication bypass via cross-origin cache poisoning due to missing origin isolation

Affected: Ubuntu:24.04:LTS: node-undici, Ubuntu:26.04:LTS: node-undici

undici's cache interceptor does not handle the Set-Cookie response header anywhere in its cache path, so it neither refuses to store nor strips that header. In shared cache mode, which is the default, an otherwise cacheable response that carries a Set-Cookie header, for example one marked with a public and max-age directive, is stored and then re-served to a later caller that matches the same cache key. As a result one caller's cookie is disclosed to a different caller, and an untrusted server can inject cookies into cached responses served to all subsequent callers. This violates the requirement that a shared cache must not store cookies. This affects undici versions from 7.0.0 up to 7.29.1 and from 8.0.0 up to 8.10.2. Users should upgrade to undici 7.29.1 or 8.10.2.