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Fencer Vulns
medium 4.3

CVE-2005-2539 json

Multiple cross-site scripting (XSS) vulnerabilities in FlatNuke 2.5.5 and possibly earlier versions allow remote attackers to inject arbitr…

published 2005-08-10 21 y ago modified 2026-06-16 4 mo ago also EUVD-2005-2540

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.5%
EPSS 2.5% chance of exploitation in 30 days, percentile 84%
public exploits
2
Exploit-DB

Summary

Multiple cross-site scripting (XSS) vulnerabilities in FlatNuke 2.5.5 and possibly earlier versions allow remote attackers to inject arbitrary web script or HTML via the (1) bodycolor, (2) backimage, (3) theme, or (4) logo parameter to structure.php, (5) admin, (6) admin_mail, or (7) back parameter to footer.php, or (8) the message body in a news post.

Timeline

  1. First public exploit (EDB-26099)
  2. Published

Exploit prediction

2.53% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-26099 FlatNuke 2.5.5 - 'footer.php' Multiple Cross-Site Scripting Vulnerabilities webapps, 2005-08-05
  • EDB-26098 FlatNuke 2.5.5 - 'structure.php' Multiple Cross-Site Scripting Vulnerabilities webapps, 2005-08-05
  • rgod.altervista.org http://www.rgod.altervista.org/flatnuke.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.