CRLF injection vulnerability in FlatNuke 2.5.5 and possibly earlier versions allows…
Priority LOW 32Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Partial · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
CRLF injection vulnerability in FlatNuke 2.5.5 and possibly earlier versions allows remote attackers to execute arbitrary PHP commands via an ASCII char 13 (carriage return) in the signature field, which is injected into a PHP script without a preceding comment character, which can then be executed by a direct request.
Why it matters now
EPSS 0.06102 93rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2005-2540
- 2026-10-03 Alias added: GHSA-x95g-j2cv-5p33
References
More Flatnuke vulnerabilities
- TI-2005-04191 FlatNuke 2.5.6 verifies authentication credentials based on an MD5 checksum of the admin… CVSS 2.0HIGH 10.0
- TI-2005-01795 Direct code injection vulnerability in FlatNuke 2.5.3 allows remote attackers to execute… CVSS 2.0HIGH 7.5
- TI-2005-00233 Direct code injection vulnerability in FlatNuke 2.5.1 allows remote attackers to execute… CVSS 2.0HIGH 7.5
- TI-2005-00232 index.php in FlatNuke 2.5.1 allows remote attackers to create an administrator account… CVSS 2.0HIGH 7.5
- TI-2005-03953 Directory traversal vulnerability in Flatnuke 2.5.6 allows remote attackers to access… CVSS 2.0MEDIUM 5.0
- TI-2005-02672 Directory traversal vulnerability in FlatNuke 2.5.6 and possibly earlier allows remote… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2005-2540 · CVE Program
- CVE-2005-2540 · NVD
- FIRST EPSS
- GHSA-x95g-j2cv-5p33 · GitHub Advisory Database · CC BY 4.0
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