CVE-2026-119286

GraphQL-core is a Python port of the GraphQL.js reference implementation

Risk score: 60/100
CVSS: 7.5 v3.1
Published: 29 Oct 2026

Open in the live forecast Today's forecast

What to know

What it is: GraphQL-core is a Python port of the GraphQL.js reference implementation. From 3.3.0a3 until 3.3.1, validate() reuses a module-level ValidationAbortedError when a document exceeds max_errors. Python appends frames to the reused exception's traceback on every raise, retaining each document, validation context, and erro…
Affected: See advisory
Fix: Upgrade the product to 3.3.1 or later.
Exploitation: No known exploitation

Why it is Amber

CVSS 7.5 high
Remotely exploitable without logging in
On your watchlist: python

References

Original description

GraphQL-core is a Python port of the GraphQL.js reference implementation. From 3.3.0a3 until 3.3.1, validate() reuses a module-level ValidationAbortedError when a document exceeds max_errors. Python appends frames to the reused exception's traceback on every raise, retaining each document, validation context, and error set for the process lifetime. An unauthenticated client can repeatedly submit a small document with more than 100 validation errors to cause unbounded memory growth before query execution, eventually exhausting worker memory without disclosing or modifying data. This issue is fixed in version 3.3.1.

Last activity 29 Oct 2026. Patch Forecast updates every hour.