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Fencer Intel
medium 4.3

CVE-2011-3855 json

Cross-site scripting (XSS) vulnerability in the F8 Lite theme before 4.2.2 for WordPress allows remote attackers to inject arbitrary web sc…

published 2011-09-28 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-3812

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.4%
EPSS 3.4% chance of exploitation in 30 days, percentile 89%
public exploits
1
Exploit-DB

Summary

Cross-site scripting (XSS) vulnerability in the F8 Lite theme before 4.2.2 for WordPress allows remote attackers to inject arbitrary web script or HTML via the s parameter.

Timeline

  1. First public exploit (EDB-36180)
  2. Published

Exploit prediction

3.43% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-36180 WordPress Theme F8 Lite 4.2.1 - 's' Cross-Site Scripting webapps, 2011-09-24
  • sitewat.ch https://sitewat.ch/en/Advisories/13 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

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Intel 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.