CVE-2023-0957

Name: CVE-2023-0957
Creator: NVD / NIST
Published: 2023-03-03T08:15:08.613+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.6/10EPSS 0.42%

Last modified Jun 17, 2026

CVE-2023-0957 is a critical-severity vulnerability rated 9.6/10 on the CVSS scale. An issue was discovered in Gitpod versions prior to release-2022.11.2.16. There is a Cross-Site WebSocket Hijacking (CSWSH) vulnerability that allows attackers to make WebSocket connections to the Gitpod JSONRPC server using a victim’s credentials, because the Origin header is not restricted. EPSS estimates a 0.42% chance of exploitation in the next 30 days.

Description

An issue was discovered in Gitpod versions prior to release-2022.11.2.16. There is a Cross-Site WebSocket Hijacking (CSWSH) vulnerability that allows attackers to make WebSocket connections to the Gitpod JSONRPC server using a victim’s credentials, because the Origin header is not restricted. This can lead to the extraction of data from workspaces, to a full takeover of the workspace.

Metrics

CVSS 3.1

9.6/10

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

EPSS Probability

0.42%

33.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Gitpod	Gitpod	< 2022.11.2

References

https://app.safebase.io/portal/71ccd717-aa2d-4a1e-942e-c768d37e9e0c/preview?product=default&orgId=71ccd717-aa2d-4a1e-942e-c768d37e9e0c&tcuUid=1d505bda-9a38-4ca5-8724-052e6337f34dVendor Advisory
https://github.com/gitpod-io/gitpod/commit/12956988eec0031f42ffdfa3bdc3359f65628f9fPatch
https://github.com/gitpod-io/gitpod/commit/673ab6856fa04c13b7b1f2a968e4d090f1d94e4fPatch
https://github.com/gitpod-io/gitpod/pull/16378Issue Tracking, Patch
https://github.com/gitpod-io/gitpod/pull/16405Issue Tracking, Patch
https://github.com/gitpod-io/gitpod/releases/tag/release-2022.11.2Release Notes
https://snyk.io/blog/gitpod-remote-code-execution-vulnerability-websockets/Third Party Advisory
https://app.safebase.io/portal/71ccd717-aa2d-4a1e-942e-c768d37e9e0c/preview?product=default&orgId=71ccd717-aa2d-4a1e-942e-c768d37e9e0c&tcuUid=1d505bda-9a38-4ca5-8724-052e6337f34dVendor Advisory
https://github.com/gitpod-io/gitpod/commit/12956988eec0031f42ffdfa3bdc3359f65628f9fPatch
https://github.com/gitpod-io/gitpod/commit/673ab6856fa04c13b7b1f2a968e4d090f1d94e4fPatch
https://github.com/gitpod-io/gitpod/pull/16378Issue Tracking, Patch
https://github.com/gitpod-io/gitpod/pull/16405Issue Tracking, Patch
https://github.com/gitpod-io/gitpod/releases/tag/release-2022.11.2Release Notes
https://snyk.io/blog/gitpod-remote-code-execution-vulnerability-websockets/Third Party Advisory

Timeline

Published: Mar 3, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-0957?

How severe is CVE-2023-0957?

CVE-2023-0957 has a CVSS score of 9.6/10 (CRITICAL severity). The EPSS model estimates a 0.42% probability of exploitation in the next 30 days.

How do I fix CVE-2023-0957?

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-2023-0957?

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

Scan your code now

Source: NVD / NIST