CVE-2026-119569 Parse Server 9.0.0 before 9.10.5-alpha.9 Prototype Pollution Denial of Service

Medium 6.0 Published 30 Oct 2026 Updated 30 Oct 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-119569?

CVE-2026-119569 is a medium-severity vulnerability in parse-community parse-server, published on 30 Oct 2026.

Official description

Parse Server before 8.6.108 and 9.0.0 before 9.10.5-alpha.9 contains a prototype pollution vulnerability because user-controlled keys are expanded into objects without own-property checks. Clients with class write access can send dot notation field keys or ACL entry names matching built-in object members to corrupt built-in functions, causing all requests to fail until server restart.

Weakness: CWE-1321

Which versions are affected by CVE-2026-119569?

How do I fix CVE-2026-119569?

No fix has been published for CVE-2026-119569 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-119569 being exploited?

There is no known exploitation of CVE-2026-119569 in the wild and no public exploit code.

Sources

Also known as GHSA-5gp4-jgm9-v67j, GHSA-rx55-fw4j-pvpx.