Vulnerability in Rack
CVE-2023-27539
There is a denial of service vulnerability in the header parsing component of Rack.
EPSS: 0.011 (61.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Rack
- Rails Rack — versions 2.2.6.4, 3.0.6.1
- Debian Debian_linux — versions 10.0, 11.0
Public proof-of-concept exploits
References
- support@hackerone.com (Vendor Advisory)
- support@hackerone.com (Patch, Third Party Advisory)
- support@hackerone.com (Patch)
- support@hackerone.com (Patch)
- support@hackerone.com (Mailing List, Third Party Advisory)
- support@hackerone.com (Third Party Advisory)
- support@hackerone.com (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-27539?
- CVE-2023-27539 is a medium-severity vulnerability in Rack. CVSS score: 5.3/10. Published 2025-01-09.
- How severe is CVE-2023-27539?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2023-27539 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.