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CVE-2026-22813

25
FAUCET Score

CVE-2026-22813 describes a cross-site scripting (XSS) vulnerability in Anoma's OpenCode AI coding agent, affecting versions prior to 1.1.10. The markdown renderer for LLM responses lacks proper sanitization and a Content Security Policy (CSP), allowing arbitrary HTML injection and subsequent JavaScript execution on the localhost origin. This medium-severity vulnerability (CVSS 6.1) requires user interaction (UI:R) and could lead to limited confidentiality and integrity impacts (C:L/I:L). There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.1.10CPE matchmatch criteria
cpe:2.3:a:anoma:opencode:*:*:*:*:*:-:*:*

CVSS Data

CVSS version used by this source: 4.0

9.4CRITICAL

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
HIGH
SS Integrity
HIGH
SS Availability
HIGH
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.91%
Probability of exploitation in next 30 days
EPSS Percentile
56.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0091 is in the 68th percentile among its peer group of 26,234 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (2)

npmpatch availablevia ghsa
Product: opencode-aiFixed in: 1.1.10
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

npmGHSA-c83v-7274-4vgpcritical

Malicious website can execute commands on the local system through XSS in the OpenCode web UI

Jan 13, 2026

References

github.com / anomalyco/opencode/security/advisories/GHSA-c83v-7274-4vgp
ExploitVendor Advisory