CVE-2026-91092 (GCVE-0-2026-91092)

Vulnerability from cvelistv5 – Published: 2026-09-22 07:41 – Updated: 2026-09-22 07:41
VLAI
Title
wpForo Forum <= 3.1.5 - Missing Authorization to Authenticated (Subscriber+) Guest Post Takeover via wpforo_post_edit Action / Forged comment_author_email Cookie
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.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
tomdever wpForo Forum Affected: 0 , ≤ 3.1.5 (semver)
guessed Create a notification for this product.
Credits
Jonah Burgess (CryptoCat)
Show details on NVD website
To clipboard 

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        }
      ],
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        },
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          "url": "https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/includes/functions.php#L2820"
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          "time": "2026-09-14T18:24:03.000Z",
          "value": "Vendor Notified"
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          "time": "2026-09-21T19:01:21.000Z",
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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