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VulnerabilityPublished Updated

CVE-2026-28560: gVectors Team wpForo Forum · Cross-site Scripting

Affects gVectors Team wpForo ForumSource CVE Database V5

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Not known to be exploited · CVSS 4.8 Medium : upgrade to 2.4.16 when convenient.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 4.0 base score
4.8Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 18% 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:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/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 30 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 high-privilege users from creating or modifying forum slugs with untrusted input. Consider applying input validation or output encoding workarounds to prevent injection of script-breaking characters in forum slugs.

Description

wpForo Forum 2.4.14 contains a stored cross-site scripting vulnerability that allows script injection via forum URL data output into an inline script block using json_encode without the JSON_HEX_TAG flag. Attackers set a forum slug containing a closing script tag or unescaped single quote to break out of the JavaScript string context and execute arbitrary script in all visitors' browsers.

References

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