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Fencer Vulns
medium 6.8

CVE-2007-5416 json

Drupal 5.2 and earlier does not properly unset variables when the input data includes a numeric parameter with a value matching an alphanum…

published 2007-10-12 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-5392

cvss
6.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.4%
EPSS 4.4% chance of exploitation in 30 days, percentile 91%
public exploits
1
Exploit-DB

Summary

Drupal 5.2 and earlier does not properly unset variables when the input data includes a numeric parameter with a value matching an alphanumeric parameter's hash value, which allows remote attackers to execute arbitrary PHP code by invoking the drupal_eval function through a callback parameter to the default URI, as demonstrated by the _menu[callbacks][1][callback] parameter. NOTE: it could be argued that this vulnerability is due to a bug in the unset PHP command (CVE-2006-3017) and the proper fix should be in PHP; if so, then this should not be treated as a vulnerability in Drupal.

Timeline

  1. First public exploit (EDB-4510)
  2. Published

Exploit prediction

4.42% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-4510 Drupal 5.2 - PHP Zend Hash ation Vector webapps, 2007-10-10
  • securityvulns.ru http://securityvulns.ru/Sdocument137.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

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.