{"id":"CVE-2026-85077","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-85077","generatedAt":"2026-10-28T02:21:51.056Z","title":"Applications that place attacker-controlled data in response.headers, file(..., filename=...), or cookie path and domain attributes can therefore emit injected headers and may split responses.","description":"Sanic is an opensource python web server/framework. Prior to version 24.12.1, and in version 25.12.0, the HTTP/1.1 response pipeline in sanic/response/types.py serializes response header names and values without rejecting carriage-return or line-feed characters. Applications that place attacker-controlled data in response.headers, file(..., filename=...), or cookie path and domain attributes can therefore emit injected headers and may split responses. Depending on application and proxy behavior, this can enable session fixation through injected cookies, cache poisoning, or security-header corruption. This issue is fixed in versions 24.12.1 and 25.12.1.","published":"2026-09-17T15:16:55.000Z","lastModified":"2026-09-24T21:22:20.000Z","status":"Awaiting Analysis","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":8.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N"},"cwe":["CWE-113"],"affected":[],"epss":{"score":0.00485,"percentile":0.41503,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.48%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/sanic-org/sanic/commit/47349d689d65fa1907977ac100e867894aeafb22","source":"security-advisories@github.com"},{"url":"https://github.com/sanic-org/sanic/commit/9a95bb1c187558949606b915f5162c15f2db781b","source":"security-advisories@github.com"},{"url":"https://github.com/sanic-org/sanic/commit/a332796506c7c588b6930b02a8886e43eb8ea8d6","source":"security-advisories@github.com"},{"url":"https://github.com/sanic-org/sanic/pull/3164","source":"security-advisories@github.com"},{"url":"https://github.com/sanic-org/sanic/pull/3165","source":"security-advisories@github.com"},{"url":"https://github.com/sanic-org/sanic/releases/tag/v24.12.1","source":"security-advisories@github.com"},{"url":"https://github.com/sanic-org/sanic/releases/tag/v25.12.1","source":"security-advisories@github.com"},{"url":"https://github.com/sanic-org/sanic/security/advisories/GHSA-m64h-22vf-48wm","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-85077","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}