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Fencer Vulns
medium 4.3

CVE-2004-1939 json

Cross-site scripting (XSS) vulnerability in Zaep AntiSpam 2.0 allows remote attackers to inject arbitrary web script or HTML via double enc…

published 2004-04-14 22 y ago modified 2026-06-16 4 mo ago also EUVD-2004-1931

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
1
Exploit-DB

Summary

Cross-site scripting (XSS) vulnerability in Zaep AntiSpam 2.0 allows remote attackers to inject arbitrary web script or HTML via double encoded slashes (%252F) in the key parameter.

Patch / fix

Timeline

  1. First public exploit (EDB-24001)
  2. Published

Exploit prediction

1.74% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-24001 Rhino Software Zaep AntiSpam 2.0 - Cross-Site Scripting webapps, 2004-04-14

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.