CVE-2026-24843
melange allows users to build apk packages using declarative pipelines. In version 0.11.3 to before 0.40.3, an attacker who can influence the tar stream from a QEMU guest VM could write files outside the intended workspace directory on the host. The retrieveWorkspace function extracts tar entries without validating that paths stay within the workspace, allowing path traversal via ../ sequences. This issue has been patched in version 0.40.3.
Published:Feb 4, 2026
Last Modified:Apr 17, 2026
EPS:Feb 4, 2026
EPSS Score:0.00007
CVSS Score:8.2
Affected Products
Vendor
Product
Action
Vendor
Chainguard
Product
Melange
Chainguard
Melange
Vendor
Chainguard-dev
Product
Melange
Chainguard-dev
Melange
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Related CVEs
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
