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

3.1LOW

Key Information:

Vendor

Strawberry-graphql

Status
Strawberry
Vendor
CVE Published:
4 June 2026

What is CVE-2026-45739?

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 Version(s)

strawberry >= 0.288.4, < 0.315.4

References

https://github.com/strawberry-graphql/strawberry/security...
x_refsource_CONFIRM
https://github.com/strawberry-graphql/strawberry/issues/4398
x_refsource_MISC
https://github.com/strawberry-graphql/strawberry/pull/2842
x_refsource_MISC

CVSS V3.1

Score:
3.1
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.