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CVE-2023-28756A ReDoS issue was discovered in the Time component through 0.2.1 in Ruby through 3.2.1. The Time parser mishandles invalid URLs that have…
- 5.3MediumCVSS base score
- 2.5%Exploitation in 30 daysEPSS · top 15% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A ReDoS issue was discovered in the Time component through 0.2.1 in Ruby through 3.2.1. The Time parser mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing strings to Time objects. The fixed versions are 0.1.1 and 0.2.2.
Timeline
ID reserved
By mitre
- 8 days later
· 8 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 |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
- EPSS (exploitation in 30 days)
- 2.5% · top 15% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- RubyGemstimeGHSA-fg7x-g82r-94qc (opens in a new tab)
References
References11
- https://www.ruby-lang.org/en/news/2022/12/25/ruby-3-2-0-released/ (opens in a new tab)x_transferred
- https://www.ruby-lang.org/en/downloads/releases/ (opens in a new tab)x_transferred
- https://github.com/ruby/time/releases/ (opens in a new tab)x_transferred
- https://www.ruby-lang.org/en/news/2023/03/30/redos-in-time-cve-2023-28756/ (opens in a new tab)x_transferred
- FEDORA-2023-6b924d3b75 (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2023-a7be7ea1aa (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2023-f58d72c700 (opens in a new tab)vendor-advisoryx_transferred
- [debian-lts-announce] 20230430 [SECURITY] [DLA 3408-1] jruby security update (opens in a new tab)mailing-listx_transferred
- https://security.netapp.com/advisory/ntap-20230526-0004/ (opens in a new tab)x_transferred
- GLSA-202401-27 (opens in a new tab)vendor-advisoryx_transferred
- https://lists.debian.org/debian-lts-announce/2024/09/msg00000.html (opens in a new tab)
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-2023-0999 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-fg7x-g82r-94qc (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-2023-28756)Record last updated .