Vulnerability · Published Oct 16, 2026 · Assigned by VulnCheck

CVE-2026-11162810up Distributor before 2.3.2 PHP Object Injection via set_meta()

Medium 5.0

In plain English

A medium-severity unsafe deserialization in Distributor from 10up. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).

Severity (CVSS 3.1)5.0Medium

Exploit odds (30 days)0.3%top 80.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
10up	Distributor	0 – before 2.3.2

Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

References

GitHub Security Advisory (GHSA-wm53-9j85-ph6h) vendor-advisory
https://github.com/10up/distributor/blob/2.3.1/includes/utils.php#L192-L200 technical-description
https://github.com/10up/distributor/commit/7c57edb774d80534885ca6f2c46b95d333de6e5a patch
Distributor 2.3.2 Release Notes release-notes
VulnCheck Advisory: 10up Distributor before 2.3.2 PHP Object Injection via set_meta() third-party-advisory