CVE-2026-91092
wpForo Forum <= 3.1.5 - Missing Authorization to Authenticated (Subscriber+) Guest Post Takeover via wpforo_post_edit Action / Forged comment_author_email Cookie
- 4.3MediumCVSS base score
- 0.39%Exploitation in 30 daysEPSS · top 66% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Wordfence
- 8 days later
· 8 days later
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| WordfenceCNA (assigner) | 3.1 | Medium4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
| NVDNVD · Deferred | 3.1 | Medium4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.39% · top 66% of all CVEs (11 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.
Affected products
- affected ≤ 3.1.5
References
References7
- https://www.wordfence.com/threat-intel/vulnerabilities/id/97084759-a8fb-4b26-a6fa-93d005b1110e?source=cve (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Posts.php#L319 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/includes/functions.php#L2820 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Members.php#L3704 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Actions.php#L806 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/includes/hooks.php#L1004 (opens in a new tab)
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3702319%40wpforo&new=3702319%40wpforo (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-84304 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-91092)Record last updated .