CVE-2026-84829 json
Optimole < 4.2.12 - Unauthenticated Stored XSS via Srcset Descriptor Parameter
published 2026-09-16 54 d ago modified 2026-09-17 53 d ago also EUVD-2026-80191
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 43%
- public exploits
- 0
- none known
Summary
The Optimole WordPress plugin before 4.2.12 does not properly escape a user supplied value before using it to build an image tag attribute, allowing unauthenticated users to inject arbitrary attributes into pages served to every visitor, which leads to Stored Cross-Site Scripting.
Patch / fix
- Unknown Optimole 4.2.12
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 53 d ago
Exploit prediction
0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/c8489eb1-e767-4b19-a7c0-124eab843d9e/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected products
- Unknown Optimole
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
wpscan.com
/vulnerability/c8489eb1-e767-4b19-a7c0-124eab843d9e/
exploit, vdb-entry, technical-description
Sources
- CVE List CVE-2026-84829
- NVD CVE-2026-84829
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.