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VulnerabilityPublished Updated

CVE-2026-28557: gVectors Team wpForo Forum · Missing Authorization

Affects gVectors Team wpForo ForumSource CVE Database V5

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Not known to be exploited · CVSS 7.1 High : upgrade to 2.4.16 soon.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 4.0 base score
7.1High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 23% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2.4.16
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 Feb 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade gVectors Team wpForo Forum to 2.4.16.

Affected software

ProductAffectedFixed in
gVectors TeamwpForo ForumAffected
  • >=2.4 <2.4.16
Fixed in
  • 2.4.16

AI-suggested

If you cannot patch yet, restrict access to the usergroups admin page to trusted users only and monitor for suspicious activity related to usergroup reassignment.

Description

wpForo Forum 2.4.14 contains a missing capability check vulnerability that allows authenticated users to trigger bulk wpForo usergroup reassignment via the wpforo_synch_roles AJAX handler. Attackers access the usergroups admin page, accessible to any authenticated user, to obtain a nonce, then remap all wpForo usergroups to arbitrary WordPress roles.

References

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