CVE-2026-90960: Information Disclosure (CVSS 5.3)

Description

The Seraphinite Accelerator plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.29.24 via the WP_Object_Cache::_getFilePath. This makes it possible for unauthenticated attackers to extract complete WordPress user records — including plaintext user_login, user_email, hashed user_pass, and user_activation_key — from predictable gzip-serialized cache files at wp-content/cache/seraphinite-accelerator/oc/g/users/g/<USER_ID>.dat.gz. This vulnerability is only exploitable when the plugin's Object Cache feature is enabled, and requires the attacker to first trigger caching of the target user record (e.g., via an unauthenticated REST API request) before retrieving the resulting cache file.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS — Exploit Prediction

0.0032

Probability of exploitation

0.25%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-200 CWE-200

References

Other References

https://plugins.trac.wordpress.org/browser/seraphinite-accelerator/tags/2.29.24/cache_obj.php#L191 https://plugins.trac.wordpress.org/browser/seraphinite-accelerator/tags/2.29.24/cache_obj.php#L257 https://plugins.trac.wordpress.org/browser/seraphinite-accelerator/tags/2.29.24/cache_obj.php#L319 https://plugins.trac.wordpress.org/browser/seraphinite-accelerator/tags/2.29.24/common.php#L1873 https://plugins.trac.wordpress.org/browser/seraphinite-accelerator/tags/2.29.24/common.php#L2828 https://plugins.trac.wordpress.org/browser/seraphinite-accelerator/tags/2.29.24/oper.php#L1595 https://plugins.trac.wordpress.org/browser/seraphinite-accelerator/tags/2.29.24/oper.php#L2058 https://plugins.trac.wordpress.org/changeset/3701630/seraphinite-accelerator/trunk/cache_obj.php https://www.wordfence.com/threat-intel/vulnerabilities/id/71b64440-6a31-40e4-9f38-93eba8858a2c?source=cve

Frequently Asked Questions

What is CVE-2026-90960? +

The Seraphinite Accelerator plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.29.24 via the WP_Object_Cache::_getFilePath. This makes it possible for unauthenticated attackers to extract complete WordPress user records — including plaintext user_login, user_email, hashed user_pass, and user_activation_key — from predictable gzip-serialized cache files at wp-content/cache/seraphinite-accelerator/oc/g/users/g/<USER_ID>.dat.gz. This vulnerability is only exploitable when the plugin's Object Cache feature is enabled, and requires the attacker to first trigger caching of the target user record (e.g., via an unauthenticated REST API request) before retrieving the resulting cache file. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2026-90960? +

CVE-2026-90960 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0032, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-90960? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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