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TI-2026-85746 Aliases CVE-2026-115673GHSA-xvj9-569f-63gr

Stored XSS in Anti-Spam by CleanTalk via comment author email

Priority LOW 34CWE-79Published · Updated

Key facts

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

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

Summary

The Anti-Spam, Spam FireWall by CleanTalk WordPress plugin before 6.91 does not escape a commenter-supplied value before outputting it on an administrative spam-review screen (CWE-79). An unauthenticated attacker can inject arbitrary web scripts that run in the browser of an administrator who reviews flagged comments. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

The Anti-Spam, Spam FireWall by CleanTalk WordPress plugin before 6.91 does not escape a commenter-supplied value before outputting it on an administrative spam-review screen, allowing unauthenticated users to inject arbitrary web scripts that execute in the browser of an administrator who reviews flagged comments.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00267 18th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Anti-Spam, Spam FireWall by CleanTalk (Unknown): 6.91

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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
UnknownAnti-Spam, Spam FireWall by CleanTalkbefore 6.916.91Patch availableCNA
  • Anti-Spam, Spam FireWall by CleanTalk VendorUnknown Affected before 6.91 Fixed in 6.91 Patch available CNA

Remediation

Update Anti-Spam, Spam FireWall by CleanTalk to version 6.91 or later.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA Anti-Spam, Spam FireWall by CleanTalk (Unknown) Fixed in 6.91

Timeline

  1. 2026-11-06 Threatist record created from CVE-2026-115673
  2. 2026-11-06 Alias added: GHSA-xvj9-569f-63gr
  3. 2026-11-06 CVSS score added · CISA ADP
  4. 2026-11-06 Weakness changed · CISA ADP
  5. 2026-11-06 CISA SSVC decision points changed

References

Exploit 1

Sources

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