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Fencer Vulns
medium 6.8

CVE-2009-2852 json

WP-Syntax plugin 0.9.1 and earlier for Wordpress, with register_globals enabled, allows remote attackers to execute arbitrary PHP code via…

published 2009-08-18 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-2842

cvss
6.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.8%
EPSS 4.8% chance of exploitation in 30 days, percentile 92%
public exploits
1
Exploit-DB

Summary

WP-Syntax plugin 0.9.1 and earlier for Wordpress, with register_globals enabled, allows remote attackers to execute arbitrary PHP code via the test_filter[wp_head] array parameter to test/index.php, which is used in a call to the call_user_func_array function.

Timeline

  1. Published
  2. First public exploit (EDB-9431)

Exploit prediction

4.81% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-9431 WordPress Plugin WP-Syntax 0.9.1 - Remote Command Execution webapps, 2009-08-27
  • securityfocus.com http://www.securityfocus.com/bid/36040 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
  • CWE-20 Improper Input Validation

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.