CVE-2026-22785Public exploitNetwork attack vector

Arbitrary code execution via unescaped operation summary

Published Jan 12, 2026 · Updated Jan 12, 2026

Code injection in Orval before 7.18.0 allows remote attackers to execute arbitrary code through a crafted OpenAPI operation summary. The generateServer logic in packages/mcp/src/index.ts interpolates verbOption.summary into a single-quoted server.tool call without JavaScript string escaping. Exploitation requires an attacker-controlled specification to reach MCP server generation; execution occurs when the generated server code runs.

CVSS severity9.3
Critical
EPSS probability0.79%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Code injection in Orval before 7.18.0 allows remote attackers to execute arbitrary code through a crafted OpenAPI operation summary. The generateServer logic in packages/mcp/src/index.ts interpolates verbOption.summary into a single-quoted server.tool call without JavaScript string escaping. Exploitation requires an attacker-controlled specification to reach MCP server generation; execution occurs when the generated server code runs.

The record

CVE
CVE-2026-22785
Published
Jan 12, 2026
Updated
Jan 12, 2026
Vendor
Orval
Product
Orval
Classifications
CWE-77, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 7.18.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Orval · Orvalversion=< 7.18.0

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059.007JavaScript/JScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo