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TI-2021-22552 Aliases CVE-2021-47939GHSA-w3hh-x22g-mhjw

Evolution CMS 3.1.6 Authenticated Remote Code Execution via Module Creation

Priority HIGH 73CWE-94Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-94.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00638 50th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
EvoEvolution CMS3.1.6—No fix listedCNA
  • Evolution CMS VendorEvo Affected 3.1.6 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-47939
  2. 2026-10-03 Alias added: GHSA-w3hh-x22g-mhjw
  3. 2026-10-25 EPSS moved to the 50th–90th percentile

References

Exploit 1

Other 2

  • TI-2023-23201 Cross-site scripting (XSS) vulnerability in evolution evo v.3.2.3 allows a local attacker… CVSS 3.1MEDIUM 6.1
  • TI-2023-23200 Cross-site scripting (XSS) vulnerability in evolution v.3.2.3 allows a local attacker to… CVSS 3.1MEDIUM 5.2
  • TI-2020-14493 Cross Site Scripting (XSS) vulnerability in Evolution CMS 2.0.2 via the Document Manager feature. CVSS 3.1MEDIUM 5.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences