CVE-2026-111628
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AI Threat Summary
CVE-2026-111628 is a moderate vulnerability with a CVSS score of 5.0 affecting the target software. Threat hunters should monitor for exploit attempts and apply vendor patches immediately.
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.
Attack Chain
Attacker scans for vulnerable versions using version banners or PoC scanners
Attacker triggers CVE-2026-111628 vulnerability with a crafted request or payload
Vulnerability exploited to perform unauthorized actions on the target system
Depending on vulnerability type, attacker achieves data access, service disruption, or code execution
MITRE ATT&CK Techniques
Indicators of Compromise
| Type | Value | Description | |
|---|---|---|---|
| user_agent | Mozilla/5.0 (compatible; exploit/1.0) |
Generic exploit scanner user agent pattern | |
| url | /api/vuln-endpoint?payload=<malicious> |
Exploit attempt against application endpoint — monitor access logs for anomalous params |
Remediation
Quick Facts
| CVE ID | CVE-2026-111628 |
| CVSS Score | 5.0 |
| Vector | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L |
| Published | 2026-10-16 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |
References
- https://github.com/10up/distributor/blob/2.3.1/includes/util…
- https://github.com/10up/distributor/commit/7c57edb774d805348…
- https://github.com/10up/distributor/releases/tag/2.3.2
- https://github.com/10up/distributor/security/advisories/GHSA…
- https://www.vulncheck.com/advisories/10up-distributor-before…