CVE-2026-15249 json
Patterns Kit <= 1.0.3 - Contributor+ Stored XSS via YouTube Popup Link
published 2mo ago modified 2mo ago also EUVD-2026-57083
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 13%
- public exploits
- 0
- none known
Summary
The Patterns Kit WordPress plugin through 1.0.3 does not escape a link attribute before its client-side script inserts it into the page, allowing users with a role as low as Contributor to store a payload that executes in the browser of a user who views the content and clicks the affected element.
Is CVE-2026-15249 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2mo ago
Exploit prediction
0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/ad42fc34-5d7e-4fb9-98fc-b9e80b552535/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected products
- Unknown Patterns Kit
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
wpscan.com
/vulnerability/ad42fc34-5d7e-4fb9-98fc-b9e80b552535/
exploit, vdb-entry, technical-description
Sources
- CVE List CVE-2026-15249
- NVD CVE-2026-15249
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.