Skip to content
Fencer Vulns
high 8.5

CVE-2021-43836 json

PHP file inclusion in the Sulu admin panel

published 2021-12-15 4 y ago modified 2026-07-08 4 mo ago also GHSA-vx6j-pjrh-vgjh , EUVD-2021-2597

cvss
8.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.0%
EPSS 2.0% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

Sulu is an open-source PHP content management system based on the Symfony framework. In affected versions an attacker can read arbitrary local files via a PHP file include. In a default configuration this also leads to remote code execution. The problem is patched with the Versions 1.6.44, 2.2.18, 2.3.8, 2.4.0. For users unable to upgrade overwrite the service `sulu_route.generator.expression_token_provider` and wrap the translator before passing it to the expression language.

Patch / fix

  • packagist sulu/sulu 1.6.44, 2.2.18, 2.3.8, 2.4.0
  • sulu sulu 1.6.44, 2.2.18, 2.3.8

Exploit prediction

2.05% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P
GitHub 3.1 8.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
packagist sulu/sulu
<1.6.44
>=2.0.0, <2.2.18
>=2.3.0, <2.3.8
>=2.4.0-RC1, <2.4.0
1.6.44
2.2.18
2.3.8
2.4.0

Affected products

  • sulu sulu

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

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.