EUVD-2026-44884
GHSA-fpxv-63pw-m29m
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Network vector and low complexity confirmed by nonce self-service via admin bar; PR:L reflects mandatory subscriber authentication; only audit log integrity is affected, no confidentiality or system availability loss.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Lifecycle Timeline
2DescriptionCVE.org
The The Cache Purger plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.3.20. 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 permanently truncate the plugin's cache-purge audit log (wp-content/purge.log), destroying the entire cache-purge audit history. The tcp_log_purge nonce is rendered in the admin bar on frontend pages accessible to all authenticated users including subscribers, meaning any authenticated user possesses the nonce required to trigger the deletion.
AnalysisAI
Authorization bypass in The Cache Purger WordPress plugin (all versions through 2.3.20) allows any subscriber-level authenticated user to permanently destroy the plugin's entire cache-purge audit log (wp-content/purge.log). The root cause is that the tcp_log_purge nonce - the only credential required to trigger log deletion - is rendered in the WordPress admin bar on frontend pages visible to all authenticated users, including the lowest-privilege subscribers, making the authorization check trivially bypassable. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid WordPress account at subscriber level or higher - completely unauthenticated access is not sufficient. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 4.3 (Medium, AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N) accurately reflects the constrained real-world impact: the only data destroyed is the plugin's own audit log, not site content, user data, or core WordPress functionality. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker registers or compromises a low-privilege subscriber account on the target WordPress site. Upon logging in, the attacker loads any frontend page - the WordPress admin bar automatically delivers the tcp_log_purge nonce in the page HTML. … |
| Remediation | Update The Cache Purger plugin to the version released after changeset 3603867 in the WordPress plugin repository; the precise version number following 2.3.20 is not independently confirmed from the available data, so administrators should install the latest available version from the WordPress plugin directory and verify it post-dates this changeset. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
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