How severe is CVE-2026-45739?

CVE-2026-45739 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-45739 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-45739?

CVE-2026-45739 affects Strawberry Strawberry Graphql. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-45739?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-45739 have an EU (EUVD) identifier?

Yes. CVE-2026-45739 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34270.

When was CVE-2026-45739 published?

CVE-2026-45739 was published on 2026-06-04 and last updated on 2026-06-17.

CVE-2026-45739

CVE-2026-45739 is a low-severity vulnerability in Strawberry Strawberry Graphql with a CVSS 3.x base score of 3.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Low (CVSS 3.x base score 3.1)
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34270
Weakness: CWE-200
Affected product: Strawberry Strawberry Graphql
Published: 2026-06-04
Last modified: 2026-06-17

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.

Frequently asked questions

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.
How severe is CVE-2026-45739?: CVE-2026-45739 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-45739 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-45739?: CVE-2026-45739 affects Strawberry Strawberry Graphql. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-45739?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-45739 have an EU (EUVD) identifier?: Yes. CVE-2026-45739 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34270.
When was CVE-2026-45739 published?: CVE-2026-45739 was published on 2026-06-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:strawberry:strawberry_graphql:*:*:*:*:*:python:*:*

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