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TI-2026-79574 Aliases CVE-2026-113499GHSA-vm5g-h8fh-8cpp

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 has a cross-site scripting flaw (CWE-79): an HTML rewriting routine removes a quote that ends an attribute, even outside stylesheet content. Combined with unescaped comment author output, an unauthenticated user's published comment can inject attributes that run JavaScript for any visitor, including a logged-in administrator, while the affected option is enabled. The references include an exploit link.

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 restrict one of its HTML rewriting routines to stylesheet content, so it removes a quote that terminates an attribute in the rendered page, and combined with unescaped comment author output this allows unauthenticated users whose comment is published to inject attributes that execute JavaScript in the browser of any visitor, including a logged-in administrator, who views front-end pages while the affected option 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

Upgrade LiteSpeed Cache to version 7.9.2 or later.

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-2026-79575 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-2026-113499
  2. 2026-10-23 Alias added: GHSA-vm5g-h8fh-8cpp
  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