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Vulnerability record · CVE-2026-18579 · published 11 September 2026

CVE-2026-18579: Cross-site scripting vulnerability

The WP Photo Album Plus plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'HTTP_X_FORWARDED_FOR' parameter in all versions up to, and including, 9.2.08.003 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. The nonce failure path for the getshortcodedrenderedfenodelay action serves as the log-write trigger rather than an access barrier — a deliberately failed nonce check causes wppa_log() to record the attacker-supplied X-Forwarded-For value to disk, making the exploit fully reachable by unauthenticated callers via the wp_ajax_nopriv_wppa endpoint.

7.2 CVSS 3.1 High EPSS 0.29% · top 80.4% CWE-79 · Cross-site scripting Deferred
7.2CVSS 3.1 base score
0.29%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
11References
11 Sep 2026Last modified by NVD

Description

The WP Photo Album Plus plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'HTTP_X_FORWARDED_FOR' parameter in all versions up to, and including, 9.2.08.003 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. The nonce failure path for the getshortcodedrenderedfenodelay action serves as the log-write trigger rather than an access barrier — a deliberately failed nonce check causes wppa_log() to record the attacker-supplied X-Forwarded-For value to disk, making the exploit fully reachable by unauthenticated callers via the wp_ajax_nopriv_wppa endpoint.

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

References

LinkTags
https://plugins.trac.wordpress.org/browser/wp-photo-album-plus/tags/9.2.07.002/js/wppa-admin-scripts.js#L2069
https://plugins.trac.wordpress.org/browser/wp-photo-album-plus/tags/9.2.07.002/wppa-ajax.php#L1246
https://plugins.trac.wordpress.org/browser/wp-photo-album-plus/tags/9.2.07.002/wppa-input.php#L560
https://plugins.trac.wordpress.org/browser/wp-photo-album-plus/tags/9.2.07.002/wppa-utils.php#L1960
https://plugins.trac.wordpress.org/browser/wp-photo-album-plus/tags/9.2.08.003/js/wppa-admin-scripts.js#L2069
https://plugins.trac.wordpress.org/browser/wp-photo-album-plus/tags/9.2.08.003/wppa-ajax.php#L1246
https://plugins.trac.wordpress.org/browser/wp-photo-album-plus/tags/9.2.08.003/wppa-input.php#L560
https://plugins.trac.wordpress.org/browser/wp-photo-album-plus/tags/9.2.08.003/wppa-utils.php#L1960
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3641521%40wp-photo-album-plus%2Ftrunk%2
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3641521%40wp-photo-album-plus%2Ftrunk%2
https://www.wordfence.com/threat-intel/vulnerabilities/id/251943ed-65d2-4635-9c84-2cf671233543?source=cve

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Source: NIST National Vulnerability Database (record CVE-2026-18579), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.