cvedb.io
CVE-2026-7635
HIGH · CVSS 8.1
EPSS exploitation probability: 0%
Published 2026-05-13T05:16:24.737 · Last modified 2026-06-17T11:02:42.980

Summary

The coreActivity: Activity Logging for WordPress plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.0. This is due to the plugin failing to validate or strip PHP serialization syntax from the User-Agent HTTP header before storing it in the logmeta table, and subsequently calling `maybe_unserialize()` on every retrieved `meta_value` in `query_metas()` without verifying the data was originally serialized by the application. This makes it possible for unauthenticated attackers to inject a crafted PHP serialized payload via the User-Agent header during any logged event (such as a failed login attempt), which, when an administrator views the Logs page, is deserialized and passed to `DeviceDetector::setUserAgent()`, triggering a Fatal TypeError tha

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.