CVE-2026-25122— apko is vulnerable to unbounded resource consumption in expandapk.Split on attacker-controlled .apk streams
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I. Basic Information for CVE-2026-25122
Vulnerability Information
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Vulnerability Title
apko is vulnerable to unbounded resource consumption in expandapk.Split on attacker-controlled .apk streams
Source: NVD (National Vulnerability Database)
Vulnerability Description
apko allows users to build and publish OCI container images built from apk packages. From version 0.14.8 to before 1.1.0, expandapk.Split drains the first gzip stream of an APK archive via io.Copy(io.Discard, gzi) without explicit bounds. With an attacker-controlled input stream, this can force large gzip inflation work and lead to resource exhaustion (availability impact). The Split function reads the first tar header, then drains the remainder of the gzip stream by reading from the gzip reader directly without any maximum uncompressed byte limit or inflate-ratio cap. A caller that parses attacker-controlled APK streams may be forced to spend excessive CPU time inflating gzip data, leading to timeouts or process slowdown. This issue has been patched in version 1.1.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: NVD (National Vulnerability Database)
Vulnerability Title
apko 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
apko是apko开源的一个基于 apk 的 OCI 镜像构建器。 apko 0.14.8版本至1.1.0之前版本存在资源管理错误漏洞，该漏洞源于expandapk.Split函数处理APK归档时未设置明确边界，可能导致资源耗尽。
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 | apko | >= 0.14.8, < 1.1.0 | - |
II. Public POCs for CVE-2026-25122
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · chainguard-dev · 2026-02-04 · 7 CVEs total
| CVE-2026-24843 | 8.2 HIGH | melange QEMU runner could write files outside workspace directory |
| 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-2026-25145 | 5.5 MEDIUM | melange has a path traversal in license-path which allows reading files outside workspace |
IV. Related Vulnerabilities
Same product: apko
- CVE-2026-42576
apko `DiscoverKeys` has a panic on non-rsa jwks key that cau - CVE-2026-42575
apko doesn't verify downloaded apk packages against APKINDEX - CVE-2026-42574
apko dirFS has a symlink-following path traversal that allow - CVE-2026-25140
apko affected by potential unbounded resource consumption in - CVE-2026-25121
apko is vulnerable to path traversal in apko dirFS which all
Same vendor: chainguard-dev
- CVE-2026-42576
apko `DiscoverKeys` has a panic on non-rsa jwks key that cau - CVE-2026-42575
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-400
- CVE-2026-8187
Open5GS UPF gtp-path.c _gtpv1_u_recv_cb resource consumption - CVE-2026-42343
FastGPT: Uncontrolled Resource Consumption leading to Sandbo - CVE-2026-42212
SolidCAM-GPPL-IDE: XML External Entity (XXE) and billion-lau - CVE-2026-32686
Unbounded exponent in decimal enables unauthenticated DoS - CVE-2026-20188
Cisco Crosswork Network Controller and Cisco Network Service
V. Comments for CVE-2026-25122
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