CVE-2005-2540

CVE-2005-2540 is a medium-severity vulnerability in Flatnuke with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

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.

Frequently asked questions

What is CVE-2005-2540?
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.
How severe is CVE-2005-2540?
CVE-2005-2540 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2005-2540 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-2540?
CVE-2005-2540 affects Flatnuke. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2005-2540?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2005-2540 published?
CVE-2005-2540 was published on 2005-08-10 and last updated on 2026-06-16.

References

Affected products (1)

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