Read the docs
TI-2024-08374 Aliases CVE-2024-9021GHSA-h3fm-h666-8g3f

Relevanssi < 4.23.1 - Contributor+ Stored XSS

Priority MEDIUM 58CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.

Summary

In the process of testing the Relevanssi WordPress plugin before 4.23.1, a vulnerability was found that allows you to implement Stored XSS on behalf of the Contributor+ by embedding malicious script, which entails account takeover backdoor

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00451 39th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix Fixed Relevanssi (Unknown): 4.23.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownRelevanssibefore 4.23.14.23.1Patch availableCNA
  • Relevanssi VendorUnknown Affected before 4.23.1 Fixed in 4.23.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:relevanssi:relevanssi:*:*:*:*:free:wordpress:*:*before 4.23.1Vulnerablecomesio
  • cpe:2.3:a:relevanssi:relevanssi:*:*:*:*:free:wordpress:*:* Versions before 4.23.1 Vulnerable ·comesio

Remediation

  • Fix · CNA Relevanssi (Unknown) Fixed in 4.23.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-9021
  2. 2026-10-03 Alias added: GHSA-h3fm-h666-8g3f

References

Exploit 1

  • TI-2023-06585 Relevanssi (Free < 4.22.0, Premium < 2.25.0) - Unauthenticated Private/Draft Post Disclosure CVSS 3.1MEDIUM 5.3
  • TI-2024-01287 Missing authorization in comesio Relevanssi Premium CVSS 3.1MEDIUM 5.3
  • TI-2024-03012 Relevanssi – A Better Search <= 4.22.1 - Unauthenticated Second Order CSV Injection CVSS 3.1CRITICAL 9.8
  • TI-2024-03011 Relevanssi – A Better Search <= 4.22.1 - Missing Authorization to Unauthenticated Count Option Update CVSS 3.1HIGH 8.2
  • TI-2016-08987 The Relevanssi Premium plugin before 1.14.6.1 for WordPress has SQL injection with resultant unsafe unserialization. CVSS 3.1HIGH 8.8
  • TI-2024-07072 Relevanssi <= 4.22.2 (Free) and <= 2.25.1 (Premium) - Unauthenticated Information Exposure CVSS 3.1HIGH 7.5
See all 10 →

Sources

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