EUVD-2026-52598
GHSA-qc2w-xhvw-6xmh
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
AC:H reflects the non-default Cyrlitera configuration prerequisite, a condition beyond the attacker's control; all other metrics align with the vendor vector.
Primary rating from Vendor (WPScan).
CVSS VectorVendor: WPScan
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
Lifecycle Timeline
4DescriptionCVE.org
The Clearfy Cache WordPress plugin before 2.4.3 does not validate the redirect target in its Cyrlitera old-URL redirect handler, passing a decoded request URI to an unsafe redirect function, which allows unauthenticated attackers to redirect visitors to an arbitrary external URL when a non-default option is enabled.
AnalysisAI
Open redirect in Clearfy Cache WordPress plugin (versions before 2.4.3) allows unauthenticated attackers to redirect site visitors to arbitrary external URLs by exploiting the Cyrlitera old-URL redirect handler, which passes a decoded request URI to an unsafe redirect function without target validation. Exploitation requires that the non-default Cyrlitera redirect option is enabled on the target site, and a victim must interact with an attacker-crafted URL. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The Cyrlitera old-URL redirect handler must be explicitly enabled in the Clearfy Cache plugin settings - this is a non-default option, so sites that have not turned it on are not vulnerable regardless of plugin version. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The vendor-assigned CVSS score of 4.7 (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N) is moderate but arguably overstates ease of exploitation because AC:L does not account for the non-default configuration prerequisite - independently this warrants AC:H, which would lower the base score further. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker discovers a WordPress site running Clearfy Cache with the Cyrlitera redirect option enabled, then crafts a URL such as https://victim.com/old-cyrillic-path?redirect=https://attacker.com/phish and distributes it via a phishing email or social media post. When a legitimate visitor clicks the link, the plugin's unvalidated redirect handler forwards them transparently to the attacker-controlled domain, where credential harvesting or malware delivery can occur. … |
| Remediation | Update the Clearfy Cache plugin to version 2.4.3 or later, which introduces redirect target validation in the Cyrlitera handler; this is the primary and preferred fix. … Detailed patch versions, workarounds, and compensating controls in full report. |
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