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Vulnerability · Published Jun 4, 2026 · Assigned by GitHub_M

CVE-2026-45739Strawberry GraphQL: Default GraphiQL may expose HTTP headers in URLs

Low 3.1

In plain English

A low-severity information exposure in strawberry from strawberry-graphql. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.1Low
Exploit odds (30 days)0.2%top 87.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Strawberry GraphQL is a library for creating GraphQL APIs. In versions 0.288.4 through 0.315.3, Strawberry's bundled GraphiQL template wrote values from the GraphiQL headers editor into the browser URL query string. If a user entered a sensitive header, such as `Authorization: Bearer <token>`, the value could become visible in browser history, copied links, and server/proxy/CDN access logs after a page reload or shared request. Version 0.315.4 patches the issue.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
PyPIstrawberry-graphql0.315.4GHSA-x97m-qp5c-w9xj
PyPIstrawberry-graphql0.315.4PYSEC-2026-2282

Affected products (as reported)

VendorProductVersions
strawberry-graphql strawberry >= 0.288.4, < 0.315.4

Weakness: CWE-200, CWE-201 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

References