How severe is CVE-2023-26114?

CVE-2023-26114 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2023-26114 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-26114?

CVE-2023-26114 affects Coder Code-server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-26114?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-26114 published?

CVE-2023-26114 was published on 2023-03-23 and last updated on 2026-06-17.

CVE-2023-26114

CVE-2023-26114 is a high-severity vulnerability in Coder Code-server with a CVSS 3.x base score of 8.2. 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-346.

Key facts

Severity: High (CVSS 3.x base score 8.2)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-346
Affected product: Coder Code-server
Published: 2023-03-23
Last modified: 2026-06-17

Description

Versions of the package code-server before 4.10.1 are vulnerable to Missing Origin Validation in WebSockets handshakes. Exploiting this vulnerability can allow an adversary in specific scenarios to access data from and connect to the code-server instance.

Frequently asked questions

What is CVE-2023-26114?: Versions of the package code-server before 4.10.1 are vulnerable to Missing Origin Validation in WebSockets handshakes. Exploiting this vulnerability can allow an adversary in specific scenarios to access data from and connect to the code-server instance.
How severe is CVE-2023-26114?: CVE-2023-26114 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2023-26114 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-26114?: CVE-2023-26114 affects Coder Code-server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-26114?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-26114 published?: CVE-2023-26114 was published on 2023-03-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:coder:code-server:*:*:*:*:*:*:*:*

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