Head, Footer and Post Injections <= 3.3.0 - Authenticated (Administrator+) PHP Code Injection in Multisite Environments

published 2025-02-21 20 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-4530

cvss: 4.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 36%
public exploits: 0; none known

The Head, Footer and Post Injections plugin for WordPress is vulnerable to PHP Code Injection in all versions up to, and including, 3.3.0. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject PHP Code in multisite environments.

Patch / fix

fixed in 1 links 1

satollo head,_footer,_and_post_injections 3.3.1

plugins.trac.wordpress.org/changeset/3244016/ patch

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 20 mo ago (2025-02-21)

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.1	CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L
NVD	3.1	7.2	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

satollo Head, Footer and Post Injections

Classification

Weakness

CWE-94 Improper Control of Generation of Code

Technology feeds

WordPress rss critical rss

References

plugins.trac.wordpress.org /changeset/3244016/
patch
wordfence.com /threat-intel/vulnerabilities/id/5177bde6-4922-48ee-9155-577c392809a0?source=cve
third-party-advisory

Sources

CVE List CVE-2024-13900
NVD CVE-2024-13900

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.

Summary