EUVD-2026-66947
GHSA-2jmp-85xc-229c
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
XSS with scope change warrants C:L and I:L against victim browser; availability impact not applicable for script injection alone.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Lifecycle Timeline
2DescriptionCVE.org
Unauthenticated Cross Site Scripting (XSS) in WP w3all phpBB <= 3.0.6 versions.
AnalysisAI
Unauthenticated XSS in the WP w3all phpBB WordPress plugin (versions 3.0.6 and earlier) allows remote unauthenticated attackers to inject malicious scripts into pages served to victims, with scope change confirmed by the CVSS vector. Any WordPress site running this plugin at or below version 3.0.6 is exposed: no login or elevated privileges are required to craft a malicious payload, though successful exploitation requires victim interaction (UI:R), limiting opportunistic mass compromise. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The WP w3all phpBB plugin version 3.0.6 or earlier must be installed and active on a WordPress site. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.1 score reflects a meaningful but not worst-case risk: AV:N and PR:N confirm the attack is remotely exploitable without credentials, while AC:L indicates no special conditions are needed. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker crafts a URL containing an XSS payload targeting a vulnerable parameter processed by the WP w3all phpBB plugin, then delivers this link to a logged-in WordPress or phpBB user via email, forum post, or social engineering. When the victim clicks the link, the malicious script executes in their browser under the site's origin, potentially exfiltrating session cookies, WordPress nonces, or phpBB authentication tokens back to the attacker. … |
| Remediation | The primary remediation is to update the WP w3all phpBB plugin beyond version 3.0.6 via the WordPress plugin dashboard or by downloading a patched release from the plugin repository. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit all WordPress installations to identify deployments of the WP w3all phpBB plugin at version 3.0.6 or earlier and immediately deactivate the plugin to eliminate the attack surface. …
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View allSame weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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