How severe is CVE-2026-25145?

CVE-2026-25145 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-25145 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-25145?

CVE-2026-25145 affects Chainguard Melange. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-25145?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-25145 have an EU (EUVD) identifier?

Yes. CVE-2026-25145 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5370.

When was CVE-2026-25145 published?

CVE-2026-25145 was published on 2026-02-04 and last updated on 2026-06-17.

CVE-2026-25145

CVE-2026-25145 is a medium-severity vulnerability in Chainguard Melange with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-5370
Weakness: CWE-22
Affected product: Chainguard Melange
Published: 2026-02-04
Last modified: 2026-06-17

Description

melange allows users to build apk packages using declarative pipelines. From version 0.14.0 to before 0.40.3, an attacker who can influence a melange configuration file (e.g., through pull request-driven CI or build-as-a-service scenarios) could read arbitrary files from the host system. The LicensingInfos function in pkg/config/config.go reads license files specified in copyright[].license-path without validating that paths remain within the workspace directory, allowing path traversal via ../ sequences. The contents of the traversed file are embedded into the generated SBOM as license text, enabling exfiltration of sensitive data through build artifacts. This issue has been patched in version 0.40.3.

Frequently asked questions

What is CVE-2026-25145?: melange allows users to build apk packages using declarative pipelines. From version 0.14.0 to before 0.40.3, an attacker who can influence a melange configuration file (e.g., through pull request-driven CI or build-as-a-service scenarios) could read arbitrary files from the host system. The LicensingInfos function in pkg/config/config.go reads license files specified in copyright[].license-path without validating that paths remain within the workspace directory, allowing path traversal via ../ sequences. The contents of the traversed file are embedded into the generated SBOM as license text, enabling exfiltration of sensitive data through build artifacts. This issue has been patched in version 0.40.3.
How severe is CVE-2026-25145?: CVE-2026-25145 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-25145 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-25145?: CVE-2026-25145 affects Chainguard Melange. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-25145?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-25145 have an EU (EUVD) identifier?: Yes. CVE-2026-25145 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5370.
When was CVE-2026-25145 published?: CVE-2026-25145 was published on 2026-02-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:chainguard:melange:*:*:*:*:*:go:*:*

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