Vulnerability Details CVE-2026-28555
wpForo Forum 2.4.14 contains a missing authorization vulnerability that allows authenticated subscribers to close or reopen any forum topic via the wpforo_close_ajax handler. Attackers submit a valid nonce with an arbitrary topic ID to bypass the moderator permission requirement and disrupt forum discussions.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 18.8%
CVSS Severity
CVSS v3 Score 4.3
References
Products affected by CVE-2026-28555
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cpe:2.3:a:gvectors:wpforo_forum:2.4.0
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cpe:2.3:a:gvectors:wpforo_forum:2.4.1
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cpe:2.3:a:gvectors:wpforo_forum:2.4.10
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cpe:2.3:a:gvectors:wpforo_forum:2.4.11
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cpe:2.3:a:gvectors:wpforo_forum:2.4.12
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cpe:2.3:a:gvectors:wpforo_forum:2.4.13
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cpe:2.3:a:gvectors:wpforo_forum:2.4.14
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cpe:2.3:a:gvectors:wpforo_forum:2.4.15
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cpe:2.3:a:gvectors:wpforo_forum:2.4.2
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cpe:2.3:a:gvectors:wpforo_forum:2.4.3
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cpe:2.3:a:gvectors:wpforo_forum:2.4.4
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cpe:2.3:a:gvectors:wpforo_forum:2.4.5
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cpe:2.3:a:gvectors:wpforo_forum:2.4.6
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cpe:2.3:a:gvectors:wpforo_forum:2.4.7
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cpe:2.3:a:gvectors:wpforo_forum:2.4.8
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cpe:2.3:a:gvectors:wpforo_forum:2.4.9