CVE-2026-100157 json
WP Ultimate Review <= 2.4.3 - Unauthenticated Arbitrary Shortcode Execution via 'xs_reviw_summery' Parameter (Split-Shortcode / Late-Registered Shortcode)
published 2026-10-03 36 d ago modified 2026-10-06 33 d ago also EUVD-2026-91965
- cvss
- 6.5
- 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 20%
- public exploits
- 0
- none known
Summary
The The WP Ultimate Review plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 2.4.3. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes. The nonce required to pass the only gate is emitted to unauthenticated visitors via the public review form, and submitted shortcode payloads are auto-published without admin approval by default, meaning exploitation requires no account and no privileged interaction.
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 36 d ago
Exploit prediction
0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
Affected products
- roxnor WP Ultimate Review
Classification
- Weakness
-
- CWE-94 Improper Control of Generation of Code
References
- wordfence.com /threat-intel/vulnerabilities/id/ee3690d9-d1c3-4653-948b-cba1a7653574?source=cve
- plugins.trac.wordpress.org /browser/wp-ultimate-review/tags/2.4.3/app/content.php#L347
- plugins.trac.wordpress.org /browser/wp-ultimate-review/tags/2.4.3/app/content.php#L217
- plugins.trac.wordpress.org /browser/wp-ultimate-review/tags/2.4.3/app/content.php#L52
- plugins.trac.wordpress.org /browser/wp-ultimate-review/tags/2.4.3/init.php#L286
- plugins.trac.wordpress.org /changeset?reponame=&old=3720426%40wp-ultimate-review&new=3720426%40wp-ultimate-review
Sources
- CVE List CVE-2026-100157
- NVD CVE-2026-100157
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