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.
Metrics
Affected Vendors & Products
References
History
Mon, 21 Sep 2026 21:30:00 +0000
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ssvc
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Fri, 18 Sep 2026 00:15:00 +0000
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| Weaknesses | CWE-93 | |
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threat_severity
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threat_severity
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Thu, 17 Sep 2026 21:15:00 +0000
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Sanic-org
Sanic-org sanic |
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Sanic-org
Sanic-org sanic |
Thu, 17 Sep 2026 14:30:00 +0000
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| 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. | |
| Title | Sanic: HTTP response header injection via missing CR/LF validation in Sanic HTTP/1.1 responses | |
| Weaknesses | CWE-113 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-09-17T14:26:39.826Z
Updated: 2026-09-21T20:45:15.589Z
Reserved: 2026-09-02T21:21:01.776Z
Link: CVE-2026-85077
Updated: 2026-09-21T20:45:09.003Z
Status : Awaiting Analysis
Published: 2026-09-17T15:16:54.990
Modified: 2026-09-24T21:22:19.873
Link: CVE-2026-85077