CVE-2022-24801HTTP Request Smuggling in twisted.web
- 8.1HighCVSS base score
- 2.8%Exploitation in 30 daysEPSS · top 13% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to version 22.4.0rc1, the Twisted Web HTTP 1.1 server, located in the `twisted.web.http` module, parsed several HTTP request constructs more leniently than permitted by RFC 7230. This non-conformant parsing can lead to desync if requests pass through multiple HTTP parsers, potentially resulting in HTTP request smuggling. Users who may be affected use Twisted Web's HTTP 1.1 server and/or proxy and also pass requests through a different HTTP server and/or proxy. The Twisted Web client is not affected. The HTTP 2.0 server uses a different parser, so it is not affected. The issue has been addressed in Twisted 22.4.0rc1. Two workarounds are available: Ensure any vulnerabilities in upstream proxies have been addressed, such as by upgrading them; or filter malformed requests by other means, such as configuration of an upstream proxy.
Timeline
ID reserved
By GitHub_M
- 53 days later
· 53 days later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | High8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 2.8% · top 13% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- PyPITwistedGHSA-c2jg-hw38-jrqq (opens in a new tab)
References
References7
- https://github.com/twisted/twisted/security/advisories/GHSA-c2jg-hw38-jrqq (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/twisted/twisted/commit/592217e951363d60e9cd99c5bbfd23d4615043ac (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/twisted/twisted/releases/tag/twisted-22.4.0rc1 (opens in a new tab)x_refsource_MISCx_transferred
- [debian-lts-announce] 20220503 [SECURITY] [DLA 2991-1] twisted security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- FEDORA-2022-71b66d4747 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2022-9a489fa494 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- https://www.oracle.com/security-alerts/cpujul2022.html (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2022-0345 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-c2jg-hw38-jrqq (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2022-24801)Record last updated .