Deserialization in 10up Distributor
CVE-2026-111628
10up Distributor before 2.3.2 contains a PHP object injection vulnerability that allows Contributor-level users to instantiate PHP objects by double unserializing distributed post meta. Attackers can store a serialized PHP string as meta, which set_meta() in includes/utils.php unserializes on the destination site, storing attacker-defined objects whose impact depends on loaded gadget classes.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/10up/distributor/security/advisories/GHSA-wm53-9j85-ph6h (vendor-advisory)
- github.com/10up/distributor/blob/2.3.1/includes/utils.php (technical-description)
- github.com/10up/distributor/commit/7c57edb774d80534885ca6f2c46b95d333de6e5a (patch)
- github.com/10up/distributor/releases/tag/2.3.2 (release-notes)
- www.vulncheck.com/advisories/10up-distributor-before-2.3.2-php-object-injection… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111628?
- CVE-2026-111628 is a medium-severity vulnerability in 10up Distributor, classified under Deserialization of Untrusted Data. CVSS score: 5.0/10. Published 2026-10-16.
- How severe is CVE-2026-111628?
- Medium severity. CVSS v3 base score is 5.0 out of 10.