CVE-2019-25766Network attack vector

Repository token disclosure via unsanitized PR comments

Published Aug 19, 2026 · Updated Aug 25, 2026

Information disclosure in Mend.io Renovate 13.87.0 through 19.38.6 allows remote attackers to obtain temporary repository tokens. During a failed Go Modules checksum update, the artifact-error path copies a token-bearing Go process log snippet into a pull-request comment without first scrubbing secrets. Access to the affected comment is required; the token remains valid for up to one hour and carries Renovate permissions that include repository writes.

CVSS severity5.3
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Mend.io Renovate 13.87.0 through 19.38.6 allows remote attackers to obtain temporary repository tokens. During a failed Go Modules checksum update, the artifact-error path copies a token-bearing Go process log snippet into a pull-request comment without first scrubbing secrets. Access to the affected comment is required; the token remains valid for up to one hour and carries Renovate permissions that include repository writes.

The record

CVE
CVE-2019-25766
Published
Aug 19, 2026
Updated
Aug 25, 2026
Vendor
Mend.io
Product
Renovate
Classifications
CWE-200, T1552
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 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=13.87.0 <19.38.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Mend.io · Renovateversion=13.87.0 <19.38.7

Published CVSS scores

5.3GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A: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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1552Unsecured Credentials

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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