CVE-2023-27539
MEDIUM
5.3
CVSS Score
Published: January 9, 2025 at 12:33 AM UTC
Updated: June 17, 2026 at 05:45 AM UTC
3 products affected across 3 vendorsDebian LinuxRackRack
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Severity
MEDIUM5.3
Exploit prediction
EPSS 1%
SSVC
No known exploit
Description
There is a denial of service vulnerability in the header parsing component of Rack.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory 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://www.debian.org/security/2023/dsa-5530
References (7)
Mailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2023/04/msg00017.htmlThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20231208-0016/Vendor AdvisoryMailing ListThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2023/dsa-5530SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
5.3MEDIUMCISA-ADP
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- LOW
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusANALYZED
CWE
NVD-CWE-noinfo
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