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TI-2026-79575 Aliases CVE-2026-113500GHSA-grhh-22v9-vc32

Stored cross-site scripting in LiteSpeed Cache WordPress plugin

Priority LOW 35CWE-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 LiteSpeed Cache WordPress plugin before 7.9.2 is affected. Its HTML optimization routine is not limited to stylesheet content, so it can remove the markup that closes an attribute on rendered pages (CWE-79). Combined with unescaped comment author output, an unauthenticated commenter whose comment is published can inject event-handler attributes that run JavaScript for any visitor, including an administrator, while the optimization is enabled. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

The LiteSpeed Cache WordPress plugin before 7.9.2 does not limit one of its HTML optimization routines to stylesheet content, so it can delete the markup that closes an attribute in the rendered page, and combined with unescaped comment author output this allows unauthenticated users whose comments are published to inject event-handler attributes that run JavaScript in the browser of any visitor, including a logged-in administrator, viewing front-end pages while the optimization is enabled.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00304 23rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed LiteSpeed Cache (Unknown): 7.9.2

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
UnknownLiteSpeed Cachebefore 7.9.27.9.2Patch availableCNA
  • LiteSpeed Cache VendorUnknown Affected before 7.9.2 Fixed in 7.9.2 Patch available CNA

Remediation

Update LiteSpeed Cache to version 7.9.2.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA LiteSpeed Cache (Unknown) Fixed in 7.9.2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    LiteSpeed Cache 7.9.2

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2026-79574 Stored cross-site scripting in LiteSpeed Cache WordPress pluginPriority LOW 35
    • TI-2026-79576 LiteSpeed Cache lets subscribers dismiss admin noticesPriority LOW 14
    Show all 3 records →

Timeline

  1. 2026-10-23 Threatist record created from CVE-2026-113500
  2. 2026-10-23 Alias added: GHSA-grhh-22v9-vc32
  3. 2026-10-23 CVSS score added · CISA ADP
  4. 2026-10-23 Weakness changed · CISA ADP
  5. 2026-10-23 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