What is CVE-2026-22812?

CVE-2026-22812 is a high-severity vulnerability in Anoma Opencode, classified under Missing Authentication for Critical Function. CVSS score: 8.8/10. Published 2026-01-12.

How severe is CVE-2026-22812?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2026-22812 known to be exploited?

9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Anoma Opencode

CVE-2026-22812

OpenCode is an open source AI coding agent. Prior to 1.0.216, OpenCode automatically starts an unauthenticated HTTP server that allows any local process (or any website via permissive CORS) to execute arbitrary shell commands with the user's privileges. This vulnerability is fixed in 1.0.216.

Vulnerability class: Broken Authentication

Published 2026-01-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.168 (96.9th percentile), scored 2026-09-30.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.173 · newest: 0.168 · change: -0.006

Affected products

Anoma Opencode
Anomalyco Opencode — versions < 1.0.216

Weakness classification (CWE)

Public proof-of-concept exploits

References

github.com/anomalyco/opencode/security/advisories/GHSA-vxw4-wv6m-9hhh (Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-22812?: CVE-2026-22812 is a high-severity vulnerability in Anoma Opencode, classified under Missing Authentication for Critical Function. CVSS score: 8.8/10. Published 2026-01-12.
How severe is CVE-2026-22812?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2026-22812 known to be exploited?: 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.