CVE-2013-0263
Rack::Session::Cookie in Rack 1.5.x before 1.5.2, 1.4.x before 1.4.5, 1.3.x before 1.3.10, 1.2.x before 1.2.8, and 1.1.x before 1.1.6…
- 5.1MediumCVSS base score
- 5.4%Exploitation in 30 daysEPSS · top 7.3% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Rack::Session::Cookie in Rack 1.5.x before 1.5.2, 1.4.x before 1.4.5, 1.3.x before 1.3.10, 1.2.x before 1.2.8, and 1.1.x before 1.1.6 allows remote attackers to guess the session cookie, gain privileges, and execute arbitrary code via a timing attack involving an HMAC comparison function that does not run in constant time.
Timeline
ID reserved
By redhat
- 2 months later
· 2 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 | Medium5.1 | AV:N/AC:H/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 5.4% · top 7.3% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.1.
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- RubyGemsrackGHSA-xc85-32mf-xpv8 (opens in a new tab)
References
19
- 52774 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- https://groups.google.com/forum/#%21msg/rack-devel/mZsuRonD7G8/DpZIOmMLbOgJ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://groups.google.com/forum/#%21msg/rack-devel/RnQxm6i13C4/xfakH81yWvgJ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/rack/rack/commit/9a81b961457805f6d1a5c275d053068440421e11 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 52033 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- https://github.com/rack/rack/commit/0cd7e9aa397f8ebb3b8481d67dbac8b4863a7f07 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://rack.github.com/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- 52134 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- https://groups.google.com/d/msg/rack-devel/xKrHVWeNvDM/4ZGA576CnK4J (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=909071 (opens in a new tab)x_refsource_MISCx_transferred
- https://groups.google.com/forum/#%21msg/rack-devel/hz-liLb9fKE/8jvVWU6xYiYJ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://groups.google.com/forum/#%21msg/rack-devel/bf937jPZxJM/1s6x95vIhmAJ (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2013:0686 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- openSUSE-SU-2013:0462 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- https://puppet.com/security/cve/cve-2013-0263 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://gist.github.com/codahale/f9f3781f7b54985bee94 (opens in a new tab)x_refsource_MISCx_transferred
- https://twitter.com/coda/statuses/299732877745197056 (opens in a new tab)x_refsource_MISCx_transferred
- 89939 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- DSA-2783 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_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-2022-5763 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-xc85-32mf-xpv8 (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-2013-0263)Record last updated .