CVE-2026-22812 | OpenCode's Unauthenticated HTTP Server Allows Arbitrary Command Execution

Exp

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.

Published: 2026-01-12 Last update: 2026-01-21 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-22812 is rated High Exploit Risk (81/100): CVSS High severity, with medium exploitation likelihood (EPSS 4.76%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2026-22812

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2026-22812

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-10 5.32% 4.76% -0.56%
2 2026-05-28 6.20% 5.32% -0.87%
3 2026-05-22 — 6.20% —

Full EPSS history (17 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-22812

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]

Weakness enumeration for CVE-2026-22812

GitHub Security Advisory for CVE-2026-22812

GHSA-vxw4-wv6m-9hhh · Severity: high · Ecosystem: npm — OpenCode's Unauthenticated HTTP Server Allows Arbitrary Command Execution

Affected software / configurations for CVE-2026-22812

Vendor Product Version Raw CPE
anoma opencode < 1.0.216 cpe:2.3:a:anoma:opencode:*:*:*:*:*:-:*:*

References for CVE-2026-22812

cvelogic Threat Intelligence