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Fencer Vulns
high 7.5

CVE-2007-1277 in the critical feed json

WordPress 2.1.1, as downloaded from some official distribution sites during February and March 2007, contains an externally introduced back…

published 2007-03-05 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-1274

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
27.8%
EPSS 27.8% chance of exploitation in 30 days, percentile 98%
public exploits
2
Exploit-DB

Summary

WordPress 2.1.1, as downloaded from some official distribution sites during February and March 2007, contains an externally introduced backdoor that allows remote attackers to execute arbitrary commands via (1) an eval injection vulnerability in the ix parameter to wp-includes/feed.php, and (2) an untrusted passthru call in the iz parameter to wp-includes/theme.php.

Timeline

  1. First public exploit (EDB-29702)
  2. Published

Exploit prediction

27.77% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-29702 WordPress Core 2.1.1 - '/wp-includes/theme.php?iz' Arbitrary Command Execution webapps, 2007-03-02
  • EDB-29701 WordPress Core 2.1.1 - Arbitrary Command Execution webapps, 2007-03-02
  • ifsec.blogspot.com http://ifsec.blogspot.com/2007/03/wordpress-code-compromised-to-enable.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

Classification

Weakness
  • CWE-20 Improper Input Validation
Technology feeds

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.