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CVE-2023-0957

30
FAUCET Score

CVE-2023-0957 is a critical Cross-Site WebSocket Hijacking (CSWSH) vulnerability affecting Gitpod versions prior to release-2022.11.2.16. This flaw allows attackers to establish WebSocket connections to the Gitpod JSONRPC server using a victim's credentials due to insufficient Origin header restrictions. With a CVSS score of 9.6 (CRITICAL), the vulnerability has a network attack vector, low attack complexity, and requires user interaction, potentially leading to full workspace takeover and data extraction. There is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), and it is not listed in CISA's KEV catalog, though it has garnered significant community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2022.11.2CPE matchmatch criteria
cpe:2.3:a:gitpod:gitpod:*:*:*:*:*:*:*:*
>= 0, < 2022.11.2CPE match
cpe:2.3:a:gitpod:gitpod:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.2HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
LOW
Exploitability Score
1.6
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.42%
Probability of exploitation in next 30 days
EPSS Percentile
34.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0042 is in the 38th percentile among its peer group of 836 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.8 Bluesky, 0.5 Mastodon, and 1.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

app.safebase.io / portal/71ccd717-aa2d-4a1e-942e-c768d37e9e0c/preview
Vendor Advisory
github.com / gitpod-io/gitpod/commit/12956988eec0031f42ffdfa3bdc3359f65628f9f
Patch
github.com / gitpod-io/gitpod/commit/673ab6856fa04c13b7b1f2a968e4d090f1d94e4f
Patch
github.com / gitpod-io/gitpod/pull/16378
Issue TrackingPatch
github.com / gitpod-io/gitpod/pull/16405
Issue TrackingPatch
github.com / gitpod-io/gitpod/releases/tag/release-2022.11.2
Release Notes
snyk.io / blog/gitpod-remote-code-execution-vulnerability-websockets
Third Party Advisory