CVE-2025-25200

Koa is expressive middleware for Node.js using ES2017 async functions. Prior to versions 0.21.2, 1.7.1, 2.15.4, and 3.0.0-alpha.3, Koa uses an evil regex to parse the X-Forwarded-Proto and X-Forwarded-Host HTTP headers. This can be exploited to carry out a Denial-of-Service attack. Versions 0.21....

CVE-2025-25200

creationtimestamp| type| source ---|---|--- 2025-02-12 18:08:28+00:00| seen| https://infosec.exchange/users/cve/statuses/113992250696737741 2025-02-12 18:15:55+00:00| seen| https://bsky.app/profile/cve-notifications.bsky.social/post/3lhyrreespr2i 2025-02-12 20:13:59+00:00| seen|...

CVE-2025-25200

CVE-2025-25200 — Koa (Node.js): A regex-based issue in Koa’s header parsing (X-Forwarded-Proto/Host) before versions 0.21.2, 1.7.1, 2.15.4, and 3.0.0-alpha.3 can be exploited to cause a Denial-of-Service. The fix is included in those versions (and later). The vulnerability stems from an inefficie...

CVE-2025-25200 Koa has Inefficient Regular Expression Complexity

Koa is expressive middleware for Node.js using ES2017 async functions. Prior to versions 0.21.2, 1.7.1, 2.15.4, and 3.0.0-alpha.3, Koa uses an evil regex to parse the X-Forwarded-Proto and X-Forwarded-Host HTTP headers. This can be exploited to carry out a Denial-of-Service attack. Versions 0.21....