CVE-2013-4363
Algorithmic complexity vulnerability in Gem::Version::ANCHORED_VERSION_PATTERN in lib/rubygems/version.rb in RubyGems before 1.8.23.2,…
- 4.3MediumCVSS base score
- 1.7%Exploitation in 30 daysEPSS · top 23% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Algorithmic complexity vulnerability in Gem::Version::ANCHORED_VERSION_PATTERN in lib/rubygems/version.rb in RubyGems before 1.8.23.2, 1.8.24 through 1.8.26, 2.0.x before 2.0.10, and 2.1.x before 2.1.5, as used in Ruby 1.9.0 through 2.0.0p247, allows remote attackers to cause a denial of service (CPU consumption) via a crafted gem version that triggers a large amount of backtracking in a regular expression. NOTE: this issue is due to an incomplete fix for CVE-2013-4287.
Timeline
ID reserved
By redhat
- 4 months later
· 4 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)
- 1.7% · top 23% of all CVEs (12 Nov 2026)
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.
- RubyGemsrubygems-updateGHSA-9qvm-2vhf-q649 (opens in a new tab)
References
References5
- https://puppet.com/security/cve/cve-2013-4363 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20130918 Re: CVE-2013-4287 Algorithmic complexity vulnerability in RubyGems 2.0.7 and older (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://blog.rubygems.org/2013/09/24/CVE-2013-4363.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20130915 Re: CVE-2013-4287 Algorithmic complexity vulnerability in RubyGems 2.0.7 and older (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [oss-security] 20130920 Re: CVE-2013-4287 Algorithmic complexity vulnerability in RubyGems 2.0.7 and older (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)
- EUVD EUVD-2022-3436 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-9qvm-2vhf-q649 (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-2013-4363)Record last updated .