CVE-2026-91092 json
wpForo Forum <= 3.1.5 - Missing Authorization to Authenticated (Subscriber+) Guest Post Takeover via wpforo_post_edit Action / Forged comment_author_email Cookie
published 2026-09-22 47 d ago modified 2026-09-23 46 d ago also EUVD-2026-84304
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 33%
- public exploits
- 0
- none known
Summary
The wpForo Forum plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.1.5. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to take over another guest author's forum post and modify its title, body, author name, and stored owner email address. This requires that guest posting and editing are enabled on the forum, and that the attacker knows the target guest author's email address.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 46 d ago
Exploit prediction
0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
Affected products
- tomdever wpForo Forum
Classification
- Weakness
-
- CWE-862 Missing Authorization
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/97084759-a8fb-4b26-a6fa-93d005b1110e?source=cve
- plugins.trac.wordpress.org /browser/wpforo/tags/3.1.5/classes/Posts.php#L319
- plugins.trac.wordpress.org /browser/wpforo/tags/3.1.5/includes/functions.php#L2820
- plugins.trac.wordpress.org /browser/wpforo/tags/3.1.5/classes/Members.php#L3704
- plugins.trac.wordpress.org /browser/wpforo/tags/3.1.5/classes/Actions.php#L806
- plugins.trac.wordpress.org /browser/wpforo/tags/3.1.5/includes/hooks.php#L1004
- plugins.trac.wordpress.org /changeset?reponame=&old=3702319%40wpforo&new=3702319%40wpforo
Sources
- CVE List CVE-2026-91092
- NVD CVE-2026-91092
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.