Vulnerability report

Exploited in the wild High confidence Not in CISA KEV

CVE-2026-88062

OmniRoute ACP Custom-Agent Remote Code Execution (RCE)

Diegosouzapw / OmniRoute · affected before 3.8.49

View live feed Monitor via API Watch CVE-2026-88062
Severity
CVSS 9.5 · Critical
Confidence
High
Exploit status
Exploited in the wild
EPSS
1.4%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-88062 is an unauthenticated OmniRoute ACP Custom-Agent Remote Code Execution (RCE). OmniRoute is an open-source AI gateway providing a single endpoint for multiple model providers. In 3.8.49 and earlier, the...

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is high. Also confirmed by third-party sources.

Who is affected?

Diegosouzapw / OmniRoute affected before 3.8.49.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

OmniRoute is an open-source AI gateway providing a single endpoint for multiple model providers

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.

diegosouzapw Affected
OmniRoute
Before 3.8.49
Published
10 Sep 2026
Exploitation Reported
21 Sep 2026
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

nuclei_scanner

CVE References

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

The Shadowserver

Recorded 21 Sep 2026

A trusted third party reported exploitation.

Proof of concept available

GitHub Advisory Database

Recorded 10 Sep 2026

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

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Source Added
The Shadowserver First 2026-09-21 00:00 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts
0
0
0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-88062.yaml 16 Sep 2026

Risk and context

Severity, weaknesses, and research context

CVSS v4.0

9.5 Critical
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

EPSS

1.4%

Weaknesses

Missing Authentication for Critical Function CWE-306 Improper Control of Generation of Code ('Code Injection') CWE-94

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

https://github.com/diegosouzapw/OmniRoute/security/advisories/GHSA-hf57-cqmx-p4gr

ghsa · Created Unknown · AI assessment 90%

OmniRoute ACP Custom-Agent Remote Code Execution (RCE)

OmniRoute < 3.8.49 - Unauthenticated RCE

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

  1. 00:00 UTC

    Added to Previdian KEV Feed

    High-confidence, third-party attested exploitation

  2. 04:30 UTC

    Nuclei template available

    Scanner coverage available

  3. 22:10 UTC

    Public PoC available

    Public proof-of-concept code published

  4. 19:14 UTC

    CVE published

    Vulnerability disclosed publicly

  5. 21:22 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2026-88062

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2026-88062",
  "confidence": "High",
  "cvss_score": 9.5,
  "cvss_estimated": false,
  "epss_score": 0.01424,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}