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CVE-2012-2374
CRLF injection vulnerability in the tornado.web.RequestHandler.set_header function in Tornado before 2.2.1 allows remote attackers to…
Medium5.0EPSS 1.3%
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
CRLF injection vulnerability in the tornado.web.RequestHandler.set_header function in Tornado before 2.2.1 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via crafted input.
Timeline
ID reserved
By redhat
- 34 days later
· 34 days later
Published
- 12 years later
· 12 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 |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
- EPSS (exploitation in 30 days)
- 1.3% · top 28% of all CVEs (8 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Weakness
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- PyPItornadoGHSA-f7fv-v9rh-prvc (opens in a new tab)
References (5)
- 53612 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://www.tornadoweb.org/documentation/releases/v2.2.1.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- 49185 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- [oss-security] 20120518 CVE Request -- Tornado (python-tornado): Tornado v2.2.1 tornado.web.RequestHandler.set_header() fix to prevent header injection (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [oss-security] 20120518 Re: CVE Request -- Tornado (python-tornado): Tornado v2.2.1 tornado.web.RequestHandler.set_header() fix to prevent header injection (opens in a new tab)mailing-listx_refsource_MLISTx_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)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-f7fv-v9rh-prvc (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-2012-2374)Record last updated .