CVE-2026-66645: wordpress table-of-contents-block Cross-site Scripting
CVSS: 6.5v3.1MediumDeferred
Published 18-08-2026Last modified 18-08-2026
Vulnerability summary
CVE-2026-66645 is a medium (CVSS 6.5) Cross-site Scripting vulnerability in wordpress table-of-contents-block. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 12.2% of scored vulnerabilities. Fixed in 1.5.1.
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)EPSS score
0.22%
0%100%
Low · +0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 18-08-2026PublishedVulnerability first disclosed.
- 18-08-2026Last modifiedVulnerability information updated.
Description
Contributor Cross Site Scripting (XSS) in Table Of Contents Block <= 1.5.0 versions.
CVSS metrics
3 scores · 3 sources · 1 versionMedium 6.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:LSources3 sources · 6.4–6.5
- NVDNIST6.5MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
- wordfenceSource6.4MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:NDiffers
EPSS trend
Probability
0.22%
Chance of exploitation in the next 30 days
Percentile
12%
Versus all other CVEs
30-day change
+0.01 pp
From 0.21% on 19-09-2026
19-09-202619-10-2026
EPSS score0.22%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Wordpress1 product
- table-of-contents-block≤ 1.5.0 (fixed in 1.5.1)
Wpdeveloper1 product
- table of contents block≥ n/a, ≤ 1.5.0
2 vendors · 2 products
References
2 links- patchstack.com/database/…VDB Entry