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TI-2021-06823 Aliases CVE-2021-24537GHSA-58m2-c5rp-jr5w

Similar Posts <= 3.1.5 - Admin+ Arbitrary PHP Code Execution

Priority LOW 35CWE-94Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-94.

Summary

The Similar Posts WordPress plugin through 3.1.5 allow high privilege users to execute arbitrary PHP code in an hardened environment (ie with DISALLOW_FILE_EDIT, DISALLOW_FILE_MODS and DISALLOW_UNFILTERED_HTML set to true) via the 'widget_rrm_similar_posts_condition' widget setting of the plugin.

Why it matters now

EPSS 0.01564 75th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownSimilar Posts – Best Related Posts Plugin for WordPress3.1.5 – 3.1.5—No fix listedCNA
  • Similar Posts – Best Related Posts Plugin for WordPress VendorUnknown Affected 3.1.5 – 3.1.5 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:shareaholic:similar_posts:*:*:*:*:*:wordpress:*:*up to 3.1.5VulnerableShareaholic
  • cpe:2.3:a:shareaholic:similar_posts:*:*:*:*:*:wordpress:*:* Versions up to 3.1.5 Vulnerable ·Shareaholic

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-24537
  2. 2026-10-03 Alias added: GHSA-58m2-c5rp-jr5w

References

Exploit 1

  • TI-2022-20015 WordPress Similar Posts Plugin <= 3.1.6 is vulnerable to Cross Site Scripting (XSS) CVSS 3.1MEDIUM 5.9

Sources

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