What’s Vulnerable › Vulnerabilities

CVE-2026-111628: 10up Distributor before 2.3.2 PHP Object Injection via set_meta()

• Severity: medium (CVSS 5.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-16 · updated 2026-10-23
• Weakness: CWE-502

Description

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.

Affected products

• 10up Distributor: before 2.3.2 — fixed in 2.3.2

How to fix

Upgrade to a fixed version: 10up Distributor 2.3.2. Check the vendor advisory for mitigations.

References

• https://github.com/10up/distributor/blob/2.3.1/includes/utils.php#L192-L200
• https://github.com/10up/distributor/commit/7c57edb774d80534885ca6f2c46b95d333de6e5a
• https://github.com/10up/distributor/releases/tag/2.3.2
• https://github.com/10up/distributor/security/advisories/GHSA-wm53-9j85-ph6h
• https://www.vulncheck.com/advisories/10up-distributor-before-2.3.2-php-object-injection-via-set-meta

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