Fiche vulnérabilité
CVE-2026-16158 : faille critique fastify fastify\/reply-from (CVSS 10.0)
Description
Impact: @fastify/reply-from versions from 8.3.1 up to but not including 12.6.4 build the internal URL cache key by concatenating the destination and source path without a delimiter. Different destination and source pairs can therefore produce the same key while resolving to different upstream URLs. When getUpstream selects an upstream from request data, a URL cached for one upstream can be reused for a request intended for another upstream, causing cross-upstream data access and modification. The default configuration is affected. Setting disableCache to true prevents the behavior. Patches: upgrade to @fastify/reply-from 12.6.4. Workarounds: pass disableCache: true when registering the plugin.
En bref
- Sévérité
- Critique (CVSS 10.0)
- Vecteur CVSS
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
- Exploitation active
- Non signalée par la CISA
- Publication
- 18 juil. 2026
- Dernière mise à jour
- 5 août 2026
Produits concernés
- fastify fastify\/reply-from