AI description
CVE-2026-88062 is an unauthenticated remote code execution (RCE) vulnerability found in OmniRoute, an open-source AI gateway, affecting versions 3.8.49 and earlier. The flaw resides in the `/api/acp/agents` endpoint, which is used for registering custom ACP agents. Attackers can exploit this by manipulating the `binary` and `versionCommand` parameters within an HTTP POST request. The vulnerability arises from insufficient input validation, specifically in the `tokenizeVersionCommand` function and `DISALLOWED_VERSION_COMMAND_CHARS` filter, which fail to adequately block interpreter evaluation arguments. This allows an attacker to bypass shell metacharacter filtering and inject arbitrary Node.js or operating system commands, leading to their execution on the host. Exploitation is possible without authentication when the `requireLogin` setting is false or during a fresh instance's bootstrap window.
- Description
- OmniRoute is an open-source AI gateway providing a single endpoint for multiple model providers. In 3.8.49 and earlier, the OmniRoute POST /api/acp/agents custom ACP agent endpoint accepted attacker-controlled binary and versionCommand values and used only a self-consistency check before execFileSync executed the selected interpreter and arguments. The same request called refreshAgentCache, and resolveVersionProbe accepted the matched command before the execFileSync sink ran it. The tokenizeVersionCommand function and DISALLOWED_VERSION_COMMAND_CHARS filter rejected a limited set of shell metacharacters but still allowed interpreter evaluation arguments. The isAuthenticated function relied on isAuthRequired, which accepted anonymous requests when requireLogin was false, while api/acp/ was absent from LOCAL_ONLY_API_PREFIXES and SPAWN_CAPABLE_PREFIXES. With requireLogin=false or during a fresh-instance bootstrap window, a remote anonymous request could supply an interpreter evaluation argument and execute arbitrary code in the server container. With requireLogin=true and a configured management password, exploitation instead required a management session or management-scoped API key. No fixed version is available as of this review.
- Source
- security-advisories@github.com
- NVD status
- Received
CVSS 4.0
- Type
- Secondary
- Base score
- 9.5
- Impact score
- -
- Exploitability score
- -
- Vector string
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/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
- Severity
- CRITICAL
- security-advisories@github.com
- CWE-94
- Hype score
- Not currently trending