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Fencer Vulns
high 7.5

CVE-2006-4954 json

The updateuser servlet in Neon WebMail for Java before 5.08 does not validate the in_id parameter, which allows remote attackers to modify…

published 2006-09-23 20 y ago modified 2026-06-16 4 mo ago also EUVD-2006-4940

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
8.1%
EPSS 8.1% chance of exploitation in 30 days, percentile 94%
public exploits
1
Exploit-DB

Summary

The updateuser servlet in Neon WebMail for Java before 5.08 does not validate the in_id parameter, which allows remote attackers to modify information of arbitrary users, as demonstrated by modifying (1) passwords and (2) permissions, (3) viewing profile settings, and (4) creating and (5) deleting users.

Patch / fix

Timeline

  1. First public exploit (EDB-28609)
  2. Published

Exploit prediction

8.13% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-28609 NeoSys Neon Webmail for Java 5.06/5.07 - 'updateuser?in_id' Servlet Arbitrary User Information Modification webapps, 2006-09-20
  • securityfocus.com http://www.securityfocus.com/bid/20109 referenced PoC, tagged "exploit" by a source, unverified
  • vuln.sg http://vuln.sg/neonmail506-en.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

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.