CVE-2026-28407

EPSS 0.04%

malcontent: Nested archive extraction failure can drop content from scan inputs

Published: 2/28/2026Modified: 3/23/2026

Also known as:GHSA-945p-3jhm-6rcpGO-2026-4577

Description

Previously, malcontent would remove nested archives which failed to extract which could potentially leave malicious content. A better approach is to preserve these archives so that malcontent can attempt a best-effort scan of the archive bytes. **Fix**: https://github.com/chainguard-dev/malcontent/pull/1383 **Acknowledgements** malcontent thanks Oleh Konko from [1seal](https://1seal.org/) for discovering and reporting this issue.

Affected packages (2)

Go/github.com/chainguard-dev/malcontentfrom 0, < 1.21.0
Go/github.com/chainguard-dev/malcontentfrom 0, < 1.21.0

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 4.0	—	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

References (5)

ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-28407
PATCHhttps://github.com/chainguard-dev/malcontent
WEBhttps://github.com/chainguard-dev/malcontent/commit/356c56659ccfcad0b249a97de8cf71f151ed3ee9
WEBhttps://github.com/chainguard-dev/malcontent/pull/1383
WEBhttps://github.com/chainguard-dev/malcontent/security/advisories/GHSA-945p-3jhm-6rcp