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Fencer Vulns
medium 4.3

CVE-2008-5656 json

typo3/cms-felogin Cross-site Scripting vulnerability

published 2008-12-17 17 y ago modified 2026-06-16 4 mo ago also GHSA-xvx2-wqf5-jjgv , EUVD-2008-5627

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 64%
public exploits
0
none known

Summary

Cross-site scripting (XSS) vulnerability in the frontend plugin for the felogin system extension in TYPO3 4.2.0, 4.2.1 and 4.2.2 allows remote attackers to inject arbitrary web script or HTML via unknown vectors.

Patch / fix

  • packagist typo3/cms-felogin 4.2.3

Exploit prediction

1.05% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

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

Affected packages

ecosystem package affected fixed in
packagist typo3/cms-felogin
>=4.2.0, <4.2.3
4.2.3

Classification

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

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.