CVE-2026-45739CWE-200CWE-201

Strawberry GraphQL: Default GraphiQL may expose HTTP headers in URLs

Low · published June 4, 2026

CVSS v3.1
3.1
EPSS
0%
Percentile
28.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
3.1 · LOW
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00360 · 28.6th percentile
Weaknesses
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor; CWE-201 · Insertion of Sensitive Information Into Sent Data
Published
2026-06-04T14:09Z
EPSS history
Timeline
  • 04 JUN 14:09Z
    Strawberry GraphQL: Default GraphiQL may expose HTTP headers in URLs
    cvelistv5