CVE-2026-26069Network attack vector

API key disclosure via metric label

Published Feb 12, 2026 · Updated Feb 12, 2026

Information exposure in Scraparr 3.0.0-beta through 3.0.1 allows remote attackers to read a Readarr API key from exported metrics. The Readarr connector passes self.api_key instead of self.alias to Prometheus label constructors, placing the secret in /metrics output. Exposure requires Readarr scraping with no alias, an unauthorized-accessible metrics endpoint, and an externally reachable Readarr instance.

CVSS severity9.1
Critical
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 exposure in Scraparr 3.0.0-beta through 3.0.1 allows remote attackers to read a Readarr API key from exported metrics. The Readarr connector passes self.api_key instead of self.alias to Prometheus label constructors, placing the secret in /metrics output. Exposure requires Readarr scraping with no alias, an unauthorized-accessible metrics endpoint, and an externally reachable Readarr instance.

The record

CVE
CVE-2026-26069
Published
Feb 12, 2026
Updated
Feb 12, 2026
Vendor
TheCfU
Product
Scraparr
Classifications
CWE-532, CWE-200, T1552
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 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=>= 3.0.0-beta, < 3.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TheCfU · Scraparrversion=>= 3.0.0-beta, < 3.0.2

Published CVSS scores

9.1GitHubCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:L
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1552Unsecured Credentials

Public exploit references

No public exploit references are available in this record.

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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