CVE-2026-54448: Trivy: Helm chart tar bomb causes OOM via unbounded io.ReadAll in parser

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-25 · updated 2026-10-25
Weakness: CWE-770

Description

Trivy is a security scanner. Prior to 0.71.0, when Trivy scans a Helm chart archive (.tgz), its custom tar unpacker reads each entry with io.ReadAll(tr) and no size limit. An attacker who can place a malicious .tgz file in the scanned path can craft a small compressed archive that decompresses to gigabytes, causing the Trivy process to be killed by the OS OOM killer. This vulnerability is fixed in 0.71.0.

Affected products

aquasecurity trivy: before 0.71.0 — fixed in 0.71.0

How to fix

Upgrade to a fixed version: aquasecurity trivy 0.71.0. Check the vendor advisory for mitigations.

References

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