How severe is CVE-2026-24844?

CVE-2026-24844 has a CVSS 3.x base score of 7.9, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-24844 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-24844?

CVE-2026-24844 affects Chainguard Melange. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-24844?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-24844 have an EU (EUVD) identifier?

Yes. CVE-2026-24844 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5372.

When was CVE-2026-24844 published?

CVE-2026-24844 was published on 2026-02-04 and last updated on 2026-06-17.

CVE-2026-24844

CVE-2026-24844 is a high-severity vulnerability in Chainguard Melange with a CVSS 3.x base score of 7.9. 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-78.

Key facts

Severity: High (CVSS 3.x base score 7.9)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-5372
Weakness: CWE-78
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 0.3.0 to before 0.40.3, an attacker who can provide build input values, but not modify pipeline definitions, could execute arbitrary shell commands if the pipeline uses ${{vars.*}} or ${{inputs.*}} substitutions in working-directory. The field is embedded into shell scripts without proper quote escaping. This issue has been patched in version 0.40.3.

Frequently asked questions

What is CVE-2026-24844?: melange allows users to build apk packages using declarative pipelines. From version 0.3.0 to before 0.40.3, an attacker who can provide build input values, but not modify pipeline definitions, could execute arbitrary shell commands if the pipeline uses ${{vars.*}} or ${{inputs.*}} substitutions in working-directory. The field is embedded into shell scripts without proper quote escaping. This issue has been patched in version 0.40.3.
How severe is CVE-2026-24844?: CVE-2026-24844 has a CVSS 3.x base score of 7.9, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-24844 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-24844?: CVE-2026-24844 affects Chainguard Melange. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-24844?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-24844 have an EU (EUVD) identifier?: Yes. CVE-2026-24844 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5372.
When was CVE-2026-24844 published?: CVE-2026-24844 was published on 2026-02-04 and last updated on 2026-06-17.

References

Affected products (1)

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

More vulnerabilities in Chainguard Melange

CVE-2026-24843 — High (CVSS 8.2): melange allows users to build apk packages using declarative pipelines. In version 0.11.3 to before 0.40.3, an attacker…
CVE-2026-25143 — High (CVSS 7.8): melange allows users to build apk packages using declarative pipelines. From version 0.10.0 to before 0.40.3, an…
CVE-2026-29050 — Medium (CVSS 6.1): melange allows users to build apk packages using declarative pipelines. Starting in version 0.32.0 and prior to version…
CVE-2026-25145 — Medium (CVSS 5.5): melange allows users to build apk packages using declarative pipelines. From version 0.14.0 to before 0.40.3, an…
CVE-2026-29051 — Medium (CVSS 4.4): melange allows users to build apk packages using declarative pipelines. Starting in version 0.32.0 and prior to version…
CVE-2026-29049 — Medium (CVSS 4.3): melange allows users to build apk packages using declarative pipelines. In version 0.40.5 and prior, melange…

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