Vulnerability · CVE-2026-113499
LiteSpeed Cache < 7.9.2 - Unauthenticated Stored XSS via CDN Inline CSS Rewriting
Published Oct 23, 2026 · catalog updated Oct 23, 2026 · Unknown LiteSpeed Cache
Last checked Oct 25, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2026-113499. EPSS is 0.30%. Act only if a listed version of Unknown LiteSpeed Cache is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
Same product and reporting
- CVE-2026-113501 · Low
- CVE-2026-113500 · High
- CVE-2024-50550 · Unknown · known exploited
- CVE-2025-12450 · Medium · known exploited
- CVE-2025-47437 · Medium
- Severity
- High7.5
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.30%
- Remediation
- Version ranges on file
- Affected products
- stated LiteSpeed Cache · vendor Unknown LiteSpeed Cache
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.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- stated LiteSpeed Cache< 7.9.2
- vendor Unknown LiteSpeed Cacheversion unspecified
How to fix CVE-2026-113499
Upgrade
CVE-2026-113499 lists a fix boundary at 7.9.2. Compare the installed build with that boundary before you change production.
Version check
Affected < 7.9.2
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2026-113499. EPSS is 0.30%. Act only if a listed version of Unknown LiteSpeed Cache is installed.
Which versions are affected?
Compare what you have installed with LiteSpeed Cache < 7.9.2. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.30%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Technology hubs
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Oct 23, 2026 · NIST NVD
Detected
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 lo
Oct 23, 2026 · CVE.org
Updated
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 lo
Sources
- CVE.orgVulnerability recordCVE-2026-113499
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 use
cve.org - FIRST EPSSExploitation probabilityCVE-2026-113499
30-day exploitation probability 0.30%
first.org - NIST NVDVulnerability recordCVE-2026-113499
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 use
nvd.nist.gov
References
Freshness
Last verified in this catalog Oct 25, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSOct 25, 2026
- CVE.orgOct 23, 2026
- NIST NVDOct 23, 2026