CVE-2026-45739

Name: CVE-2026-45739
Creator: NVD / NIST
Published: 2026-06-04T15:16:54.457+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.22%

Last modified Jun 17, 2026

CVE-2026-45739 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

EPSS Probability

0.22%

12.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Strawberry	Strawberry Graphql	>= 0.288.4, < 0.315.4

References

https://github.com/strawberry-graphql/strawberry/commit/9315ef80a621ae50ca0bc5c82f560ca4ee7e47a9Patch
https://github.com/strawberry-graphql/strawberry/issues/4398Issue Tracking
https://github.com/strawberry-graphql/strawberry/pull/2842Issue Tracking, Patch
https://github.com/strawberry-graphql/strawberry/releases/tag/0.315.4Product, Release Notes
https://github.com/strawberry-graphql/strawberry/security/advisories/GHSA-x97m-qp5c-w9xjMitigation, Vendor Advisory

Timeline

Published: Jun 4, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-45739?

How severe is CVE-2026-45739?

CVE-2026-45739 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.

How do I fix CVE-2026-45739?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-45739?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST