Cloudanix VulnDB

CVE-2026-25122

Medium · 5.5

CVSS

5.5

EPSS

0.1%

Published

Feb 4, 2026

CISA due date

—

The record

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.

Affected packages

Ecosystem Package Introduced Fixed
Go chainguard.dev/apko 0.14.8 1.1.0
Chainguard amazon-ssm-agent 0 3.3.3270.0-r5
Chainguard amazon-ssm-agent-ecs-exec 0 3.3.3270.0-r5
Chainguard cg 0 0.2.201-r0
Chainguard chainctl 0 0.2.206-r0
Chainguard dagdotdev 0 0.0.20-r6
Wolfi dagdotdev 0 0.0.20-r6
openSUSE:Leap 15.6 govulncheck-vulndb 0 0.0.20260205T172317-150000.1.146.1

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