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Vulnerability record · CVE-2026-2020 · published 7 March 2026

CVE-2026-2020: Deserialization of untrusted data vulnerability

The JS Archive List plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 6.1.7 via the 'included' shortcode attribute. This is due to the deserialization of untrusted input supplied via the 'included' parameter of the plugin's shortcode. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.

7.5 CVSS 3.1 High EPSS 0.42% · top 66.4% CWE-502 · Deserialization of untrusted data Deferred
7.5CVSS 3.1 base score
0.42%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

The JS Archive List plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 6.1.7 via the 'included' shortcode attribute. This is due to the deserialization of untrusted input supplied via the 'included' parameter of the plugin's shortcode. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.

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

References

LinkTags
https://plugins.trac.wordpress.org/browser/jquery-archive-list-widget/tags/6.1.7/classes/class-jq-archive-list-widget.ph
https://plugins.trac.wordpress.org/browser/jquery-archive-list-widget/tags/6.1.7/classes/class-js-archive-list-settings.
https://plugins.trac.wordpress.org/browser/jquery-archive-list-widget/trunk/classes/class-jq-archive-list-widget.php#L67
https://plugins.trac.wordpress.org/browser/jquery-archive-list-widget/trunk/classes/class-js-archive-list-settings.php#L
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3466978%40jquery-archive-list-widget&ne
https://www.wordfence.com/threat-intel/vulnerabilities/id/9b0f6653-471b-4cee-9c92-f24dbe2c2dbd?source=cve

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Source: NIST National Vulnerability Database (record CVE-2026-2020), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.