CVE-2026-120114: XSS (CVSS 7.2)

Description

The Debug Log Manager – Conveniently Monitor and Inspect Errors plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'message (and pageUrl)' parameter in all versions up to, and including, 2.5.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Successful exploitation requires that the site administrator has debug logging enabled with JS error logging active, and that the attacker can obtain the publicly emitted dlmVars.jsErrorLogging nonce — which is broadcast on every frontend page — to pass the nonce check on the unauthenticated endpoint.

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CVSS v3.1 Score

7.2

HIGH

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

EPSS — Exploit Prediction

0.0041

Probability of exploitation

0.35%

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-79 Cross-site Scripting (XSS)

References

Other References

https://plugins.trac.wordpress.org/browser/debug-log-manager/tags/2.5.2/bootstrap.php#L134 https://plugins.trac.wordpress.org/browser/debug-log-manager/tags/2.5.2/bootstrap.php#L567 https://plugins.trac.wordpress.org/browser/debug-log-manager/tags/2.5.2/classes/class-debug-log.php#L1605 https://plugins.trac.wordpress.org/browser/debug-log-manager/tags/2.5.2/classes/class-debug-log.php#L1728 https://plugins.trac.wordpress.org/browser/debug-log-manager/tags/2.5.2/classes/class-debug-log.php#L2158 https://plugins.trac.wordpress.org/browser/debug-log-manager/tags/2.5.2/classes/class-debug-log.php#L519 https://plugins.trac.wordpress.org/changeset?reponame=&old=3754121%40debug-log-manager&new=3754121%40debug-log-manager https://www.wordfence.com/threat-intel/vulnerabilities/id/904181bc-fd56-4296-9c59-532bbc272abd?source=cve

Frequently Asked Questions

What is CVE-2026-120114? +

The Debug Log Manager – Conveniently Monitor and Inspect Errors plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'message (and pageUrl)' parameter in all versions up to, and including, 2.5.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Successful exploitation requires that the site administrator has debug logging enabled with JS error logging active, and that the attacker can obtain the publicly emitted dlmVars.jsErrorLogging nonce — which is broadcast on every frontend page — to pass the nonce check on the unauthenticated endpoint. It has a CVSS v3.1 base score of 7.2 (HIGH).

How severe is CVE-2026-120114? +

CVE-2026-120114 has a CVSS v3.1 score of 7.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0041, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-120114? +

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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