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CVE-2026-123373

2.3 lowEPSS 0.5%

Low (2.3) in tmatens compose-lint. EPSS 0.5% estimated probability of exploitation activity in the next 30 days.

On this page
compose-lint is a Docker Compose security linter that identifies dangerous misconfigurations before deployment. From 0.2.0 until 0.25.0, compose-lint follows a project-controlled symbolic link used as the Compose file outside the project. The same issue affects compose.override.yml and a COMPOSE_FILE entry from 0.22.0, and an env_file target from 0.23.0. If an external Compose-related target fails YAML parsing, the error quotes an attacker-uncontrolled line into standard error, JSON errors, and SARIF notifications, while an external env_file can expose credential-like key names through CL-0020 and CL-0021 findings. The attacker selects the target path but not the exact parser-failure line, values from env_file are not printed, and the pass or fail result is unchanged. This issue is fixed in version 0.25.0.

Severity

CVSS 4.0

2.3 low
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.5% estimated probability of exploitation activity in the next 30 days; 40th percentile. Scored 2026-11-10. A forecast for this CVE across the internet, not for your own systems.
CISA's assessment (SSVC)
Exploitation: none · Automatable: no · Technical impact: partial, assessed 2026-11-09. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
CWEs
CWE-59 Improper Link Resolution Before File Access (Link Following)
CWE-209 Generation of Error Message Containing Sensitive Information
OWASP Top 10
A01:2025 Broken Access Control, A10:2025 Mishandling of Exceptional Conditions
Published
Assigned by
GitHub_M (CNA)
NVD analysis
Awaiting analysis
Record from
the NVD, synced

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Affected

Versions

From the CNA's record in the CVE List.

ProductAffected
tmatens compose-lint>= 0.2.0, < 0.25.0

Attack patterns (CAPEC)

  • CAPEC-17 Using Malicious Files Likelihood: High · Severity: Very High
  • CAPEC-35 Leverage Executable Code in Non-Executable Files Likelihood: High · Severity: Very High
  • CAPEC-76 Manipulating Web Input to File System Calls Likelihood: High · Severity: Very High
  • CAPEC-132 Symlink Attack Likelihood: Low · Severity: High
  • CAPEC-7 Blind SQL Injection Likelihood: High · Severity: High
  • CAPEC-54 Query System for Information Likelihood: High · Severity: Low
  • CAPEC-215 Fuzzing for application mapping Likelihood: High · Severity: Low
  • CAPEC-463 Padding Oracle Crypto Attack Severity: High

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

Check your stackJSON