CVE-2026-22813

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

O

penCode is an open source AI coding agent. The markdown renderer used for LLM responses will insert arbitrary HTML into the DOM. There is no sanitization with DOMPurify or even a CSP on the web interface to prevent JavaScript execution via HTML injection. This means controlling the LLM response for a chat session gets JavaScript execution on the http://localhost:4096 origin. This vulnerability is fixed in 1.1.10.

References

Link	Resource
https://github.com/anomalyco/opencode/security/advisories/GHSA-c83v-7274-4vgp	Vendor Advisory Exploit
https://github.com/anomalyco/opencode/security/advisories/GHSA-c83v-7274-4vgp	Vendor Advisory Exploit

Configurations

Configuration 1 (hide)

cpe:2.3:a:anoma:opencode:*:*:*:*:*:-:*:*

History

21 Jan 2026, 15:15

Type	Values Removed	Values Added
First Time		Anoma Anoma opencode
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 6.1
References	~~() https://github.com/anomalyco/opencode/security/advisories/GHSA-c83v-7274-4vgp -~~	() https://github.com/anomalyco/opencode/security/advisories/GHSA-c83v-7274-4vgp - Vendor Advisory, Exploit
CPE		cpe:2.3:a:anoma:opencode::::::-::*

13 Jan 2026, 19:16

Type	Values Removed	Values Added
References	~~() https://github.com/anomalyco/opencode/security/advisories/GHSA-c83v-7274-4vgp -~~	() https://github.com/anomalyco/opencode/security/advisories/GHSA-c83v-7274-4vgp -

12 Jan 2026, 23:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-12 23:15

Updated : 2026-01-21 15:15

NVD link : CVE-2026-22813

Mitre link : CVE-2026-22813

CVE.ORG link : CVE-2026-22813

JSON object : View

Products Affected

opencode

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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