CVE-2021-47939

high

Published 2026-05-10 · Modified 2026-05-12

CVSS v3

8.8

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2

—

VIR risk

8.8

Description

Evolution CMS 3.1.6 contains a remote code execution vulnerability that allows authenticated users with module creation permissions to execute arbitrary system commands by injecting PHP code into module parameters. Attackers can send POST requests to /manager/index.php with malicious PHP code in the 'post' parameter to create modules that execute arbitrary commands when invoked.

Predictions

Exploit likelihood

92%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No vendor mitigations ingested yet for this CVE. The mitigation-content worker queues fetches as references arrive — check back in a few minutes, or see the references list below.

References

https://evo.im/
https://github.com/evolution-cms/evolution/releases
https://www.exploit-db.com/exploits/50296
https://www.vulncheck.com/advisories/evolution-cms-authenticated-remote-code-execution-via-module-creation

CWEs

CWE-94

Verify integrity in audit chain (admin only). AS-IS.