CVSS 3.1
5.3 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LCVE-2023-27539
Medium (5.3). EPSS 1.1% chance of exploitation in the next 30 days. Fixed in rack 2.2.6.4, 3.0.6.1.
There is a denial of service vulnerability in the header parsing component of Rack.
Severity
- EPSS
- 1.1% chance of exploitation in the next 30 days; higher than 64% of CVEs (scores of 2026-10-31)
- Published
- Modified
- Record from
- the NVD, synced
Affected
- debian:debian_linux
- rack:rack
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-c6qg-cjj8-47qp | RubyGems | rack | >=2.0.0 <2.2.6.4 | 2.2.6.4 |
| GHSA-c6qg-cjj8-47qp | RubyGems | rack | >=3.0.0 <3.0.6.1 | 3.0.6.1 |
References
- https://discuss.rubyonrails.org/t/cve-2023-27539-possible-denial-of-service-vulnerability-in-racks-header-parsing/82466
- https://github.com/advisories/GHSA-c6qg-cjj8-47qp
- https://github.com/rack/rack/commit/231ef369ad0b542575fb36c74fcfcfabcf6c530c
- https://github.com/rack/rack/commit/ee7919ea04303717858be1c3f16b406adc6d8cff
- https://lists.debian.org/debian-lts-announce/2023/04/msg00017.html