CVE-2026-76231Public exploitNetwork attack vector

Arbitrary command execution via unquoted depName

Published Aug 19, 2026 · Updated Aug 20, 2026

Command injection in Renovate 32.135.0 before 40.33.0 allows remote authenticated users to execute arbitrary commands via hermit dependency names. In lib/modules/manager/hermit/artifacts.ts, the hermit manager appends the user-controlled depName into ./hermit install and ./hermit uninstall command strings without shlex quoting, so shell metacharacters in dependency names are executed instead of treated as data. Exploitation requires write access to a repository that Renovate scans and, as shown in the GitHub advisory proof of concept, can terminate or otherwise take control of the Renovate runner host or container.

CVSS severity8.4
High
EPSS probability0.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Renovate 32.135.0 before 40.33.0 allows remote authenticated users to execute arbitrary commands via hermit dependency names. In lib/modules/manager/hermit/artifacts.ts, the hermit manager appends the user-controlled depName into ./hermit install and ./hermit uninstall command strings without shlex quoting, so shell metacharacters in dependency names are executed instead of treated as data. Exploitation requires write access to a repository that Renovate scans and, as shown in the GitHub advisory proof of concept, can terminate or otherwise take control of the Renovate runner host or container.

The record

CVE
CVE-2026-76231
Published
Aug 19, 2026
Updated
Aug 20, 2026
Vendor
Mend.io
Product
Renovate
Classifications
CWE-77, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=32.135.0 <40.33.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Mend.io · Renovateversion=32.135.0 <40.33.0

Published CVSS scores

8.4VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
6.7VulnCheckCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

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

Technologies

Your stack

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Your stack

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