# CVE-2026-111628: 10up Distributor PHP object injection in post meta

Source: https://junglewise.ai/threats/cve-2026-111628-10up-distributor-before-2-3-2-contains-a-php-object-injection  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-16. Updated: 2026-10-23  
License: CC BY 4.0 with a link back

CVE-2026-111628 · Severity: medium · CVSS 5 · Published 2026-10-16

10up Distributor is a WordPress plugin that syndicates content across sites. It contains a PHP object injection flaw that allows contributors to inject malicious serialized objects into post metadata, potentially enabling remote code execution through available PHP gadget chains on the destination site.

Technologies: [10up Distributor](https://junglewise.ai/threats/technologies/distributor). Vendors: [10up](https://junglewise.ai/threats/vendors/10up).

## Quick answers

**Is CVE-2026-111628 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-111628 being exploited in the wild.

**How severe is CVE-2026-111628?** Medium severity, with a CVSS score of 5, published 16 October 2026.

**Which products and versions are affected?** 10up Distributor before 2.3.2.

**Is there a fix for CVE-2026-111628?** Yes: fixed in 2.3.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-111628 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-111628?** Check whether you run 10up Distributor at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 2.3.2

## Technical details

The vulnerability exists in the set_meta() function in includes/utils.php, which unserializes untrusted post metadata during content distribution. An attacker with Contributor-level privileges can craft a malicious serialized payload and store it as post meta; when distributed to another site, the double-unserialization process allows instantiation of arbitrary PHP objects whose impact depends on available gadget chains in loaded classes.

## Affected products

- 10up Distributor before 2.3.2

## Timeline

- 2026-10-16: disclosed

## References

- [https://github.com/10up/distributor/blob/2.3.1/includes/utils.php](https://github.com/10up/distributor/blob/2.3.1/includes/utils.php)
- [https://github.com/10up/distributor/commit/7c57edb774d80534885ca6f2c46b95d333de6e5a](https://github.com/10up/distributor/commit/7c57edb774d80534885ca6f2c46b95d333de6e5a)

## Related threats

- [Distributor authorization bypass in external connection AJAX](https://junglewise.ai/threats/cve-2026-111631-distributor-before-2-3-2-contains-a-missing-authorization)
- [10up Distributor missing authorization in ajax_push](https://junglewise.ai/threats/cve-2026-111625-10up-distributor-before-2-3-2-contains-a-missing-authorization)