CVE-2026-76876Network attack vector

Credential disclosure via always-allow Settings read policy

Published Aug 21, 2026 · Updated Aug 25, 2026

Broken access control in puemos Craftplan before 0.5.1 allows remote attackers to read stored email service credentials via the Settings API. The Settings resource read policy authorizes every request unconditionally, so a valid record ID returns decrypted SMTP passwords, email API keys, and email API secrets. No account or user interaction is required; disclosure is limited to configured email-service credentials.

CVSS severity8.2
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Broken access control in puemos Craftplan before 0.5.1 allows remote attackers to read stored email service credentials via the Settings API. The Settings resource read policy authorizes every request unconditionally, so a valid record ID returns decrypted SMTP passwords, email API keys, and email API secrets. No account or user interaction is required; disclosure is limited to configured email-service credentials.

The record

CVE
CVE-2026-76876
Published
Aug 21, 2026
Updated
Aug 25, 2026
Vendor
puemos
Product
Craftplan
Classifications
T1552
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 21, 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=0 <0.5.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

puemos · Craftplanversion=0 <0.5.1

Published CVSS scores

5.9INCIBE-CERTCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
8.2INCIBE-CERTCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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