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CVE-2023-26114

27
FAUCET Score

CVE-2023-26114 is a critical vulnerability affecting coder code-server versions prior to 4.10.1, stemming from missing origin validation in WebSocket handshakes. This flaw allows an unauthenticated attacker to remotely access data and connect to a code-server instance, posing a high risk to confidentiality and integrity. While the CVSS score is 9.3 (CRITICAL), there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.10.1CPE matchmatch criteria
cpe:2.3:a:coder:code-server:*:*:*:*:*:*:*:*

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
0.34%
Probability of exploitation in next 30 days
EPSS Percentile
26.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0034 is in the 31st percentile among its peer group of 834 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

No media coverage found for this CVE.

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 (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: code-serverFixed in: 4.10.1

Vendor Advisories (1)

npmGHSA-frjg-g767-7363critical

code-server vulnerable to Missing Origin Validation in WebSockets

Mar 23, 2023

References

github.com / coder/code-server/commit/d477972c68fc8c8e8d610aa7287db87ba90e55c7
Patch
github.com / coder/code-server/releases/tag/v4.10.1
Release Notes
security.snyk.io / vuln/SNYK-JS-CODESERVER-3368148
Patch