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CVE-2012-6109
lib/rack/multipart.rb in Rack before 1.1.4, 1.2.x before 1.2.6, 1.3.x before 1.3.7, and 1.4.x before 1.4.2 uses an incorrect regular…
- 4.3MediumCVSS base score
- 2.7%Exploitation in 30 daysEPSS · top 14% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
lib/rack/multipart.rb in Rack before 1.1.4, 1.2.x before 1.2.6, 1.3.x before 1.3.7, and 1.4.x before 1.4.2 uses an incorrect regular expression, which allows remote attackers to cause a denial of service (infinite loop) via a crafted Content-Disposion header.
Timeline
ID reserved
By redhat
- 3 months later
· 3 months later
Published
- 11 years later
· 11 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 | Medium4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 2.7% · top 14% of all CVEs (9 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- RubyGemsrackGHSA-h77x-m5q8-c29h (opens in a new tab)
References
7
- https://bugzilla.redhat.com/show_bug.cgi?id=895277 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/rack/rack/commit/c9f65df37a151821eb88ddd1dc404b83e52c52d5 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://rack.github.com/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/rack/rack/blob/master/README.rdoc (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://groups.google.com/forum/#%21msg/rack-devel/1w4_fWEgTdI/XAkSNHjtdTsJ (opens in a new tab)x_refsource_MISCx_transferred
- RHSA-2013:0548 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2013:0544 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_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-2017-0248 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-h77x-m5q8-c29h (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-2012-6109)Record last updated .