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CVE

CVE-2026-24844

melange pipeline working-directory could allow command injection
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CVE

CVE-2026-24844

melange pipeline working-directory could allow command injection

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.

Fix: Fixed with e51ca30c, Released. 

Acknowledgements

melange thanks Oleh Konko from 1seal for discovering and reporting this issue.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.9
-
3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
C
H
U
0
-
3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
C
H
U
7.8
-
3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Related Resources

No items found.

References

https://github.com/chainguard-dev/melange/security/advisories/GHSA-vqqr-rmpc-hhg2, https://nvd.nist.gov/vuln/detail/CVE-2026-24844, https://github.com/chainguard-dev/melange/commit/e51ca30cfb63178f5a86997d23d3fff0359fa6c8, https://github.com/chainguard-dev/melange

Severity

7.9

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.9
EPSS Probability
0.0001%
EPSS Percentile
0.01048%
Introduced Version
0.3.0,v0.23.10,v0.0.0-20250424063942-e43fc3027924,v0.9.0,v0.0.0-20240613221054-ed837f56957f,v0.6.0,v0.0.0-20240312153504-1ec0edee8ca5,v0.5.0,v0.0.0-20230911201904-51655d28e13a,v0.0.0-20230727074529-94cac091e4b2,v0.3.0,v0.0.0-20230123201603-08dc17acc5ad
Fix Available
0.40.3,v0.40.3,v0.0.0-20260129133018-e51ca30cfb63

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