Vulnerability · CVE-2026-66645
Contributor Cross Site Scripting (XSS) in Table Of Contents Block <= 1.5.0 versions.
Published Aug 18, 2026 · catalog updated Oct 22, 2026 · Contributor Cross Site Scripting
Last checked Oct 26, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2026-66645. EPSS is 0.22%. Act only if a listed version of Contributor Cross Site Scripting is installed.
Gaps on this record
- The stored product name is a package slug. The name on this page is taken from the title (Contributor Cross Site Scripting).
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Medium6.5
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.22%
- Remediation
- Version ranges on file
- Affected products
- stated named in the record
Contributor Cross Site Scripting (XSS) in Table Of Contents Block <= 1.5.0 versions.
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 named in the record<= 1.5.0
How to fix CVE-2026-66645
Upgrade
CVE-2026-66645 lists a fix boundary at 1.5.0. Compare the installed build with that boundary before you change production.
Version check
Affected <= 1.5.0
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-2026-66645. EPSS is 0.22%. Act only if a listed version of Contributor Cross Site Scripting is installed.
Which versions are affected?
Compare what you have installed with named in the record <= 1.5.0. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
CWE-79: Cross-site Scripting (XSS). EPSS 0.22%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
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.
Aug 18, 2026 · NIST NVD
Detected
Contributor Cross Site Scripting (XSS) in Table Of Contents Block <= 1.5.0 versions.
Oct 22, 2026 · NIST NVD
Updated
Contributor Cross Site Scripting (XSS) in Table Of Contents Block <= 1.5.0 versions.
Sources
- CVE.orgVulnerability recordCVE-2026-66645
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-66645
30-day exploitation probability 0.22%
first.org - NIST NVDVulnerability recordCVE-2026-66645
Contributor Cross Site Scripting (XSS) in Table Of Contents Block <= 1.5.0 versions.
nvd.nist.gov
References
Freshness
Last verified in this catalog Oct 26, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- CVE.orgOct 23, 2026
- FIRST EPSSOct 23, 2026
- NIST NVDOct 23, 2026