CVE-2026-14921 json
Ultimate Addons for WPBakery Page Builder < 3.21.5 - Contributor+ Stored XSS via ult_buttons Shortcode
published 2026-07-31 3 mo ago modified 2026-08-26 2 mo ago also EUVD-2026-51418
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 16%
- public exploits
- 0
- none known
Summary
The Ultimate Addons for WPBakery Page Builder WordPress plugin before 3.21.5's shared link-rendering function, Ultimate_VC_Addons::uavc_link_init(),
Patch / fix
- Unknown Ultimate Addons for WPBakery Page Builder 3.21.5
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3 mo ago
Exploit prediction
0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/4bebd9ff-87b6-45ca-9b3e-9e6048693ca6/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected products
- Unknown Ultimate Addons for WPBakery Page Builder
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
wpscan.com
/vulnerability/4bebd9ff-87b6-45ca-9b3e-9e6048693ca6/
exploit, vdb-entry, technical-description
Sources
- CVE List CVE-2026-14921
- NVD CVE-2026-14921
Fencer Vulns 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.