CVE-2026-24843— melange QEMU runner could write files outside workspace directory
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I. Basic Information for CVE-2026-24843
Vulnerability Information
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Vulnerability Title
melange QEMU runner could write files outside workspace directory
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)
Vulnerability Title
melange 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
melange是Chainguard开源的一个从源代码构建APK的软件。 melange 0.40.3之前版本存在路径遍历漏洞，该漏洞源于提取tar归档时未验证路径，可能导致路径遍历攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| chainguard-dev | melange | >= 0.11.3, < 0.40.3 | - |
II. Public POCs for CVE-2026-24843
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|---|
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- Merge commit from fork · chainguard-dev/melange@6e243d0 · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-24843
Same Patch Batch · chainguard-dev · 2026-02-04 · 7 CVEs total
| CVE-2026-25143 | 7.8 HIGH | melange affected by potential host command execution via license-check YAML mode patch pip |
| CVE-2026-24844 | 7.8 HIGH | melange pipeline working-directory could allow command injection |
| CVE-2026-25121 | 7.5 HIGH | apko is vulnerable to path traversal in apko dirFS which allows filesystem writes outside |
| CVE-2026-25140 | 7.5 HIGH | apko affected by potential unbounded resource consumption in expandapk.ExpandApk on attack |
| CVE-2026-25122 | 5.5 MEDIUM | apko is vulnerable to unbounded resource consumption in expandapk.Split on attacker-contro |
| CVE-2026-25145 | 5.5 MEDIUM | melange has a path traversal in license-path which allows reading files outside workspace |
IV. Related Vulnerabilities
Same product: melange
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melange has Path Traversal When Resolving External Pipelines - CVE-2026-29049
melange: unbounded HTTP download in `melange update-cache` c - CVE-2026-25145
melange has a path traversal in license-path which allows re - CVE-2026-25143
melange affected by potential host command execution via lic
Same vendor: chainguard-dev
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apko doesn't verify downloaded apk packages against APKINDEX - CVE-2026-42574
apko dirFS has a symlink-following path traversal that allow - CVE-2026-29051
melange has Path Traversal via .PKGINFO in --persist-lint-re - CVE-2026-29050
melange has Path Traversal When Resolving External Pipelines
Same weakness: CWE-22
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Industrial Application Software IAS Canias ERP RMI iasReques - CVE-2026-42605
AzuraCast: Path Traversal in `currentDirectory` Parameter En - CVE-2026-42574
apko dirFS has a symlink-following path traversal that allow
V. Comments for CVE-2026-24843
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