CVE-2026-28407 MEDIUM

CVE-2026-28407: malcontent's nested archive extraction failure can drop content from scan inputs

Vendor Chainguard-Dev
Product malcontent
Weakness CWE-703
Published February 27, 2026
Last update March 2, 2026
View on NVD All CVEs

CVSS base score

6.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

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

What the vulnerability does

01Description

malcontent is software for discovering supply-chain compromises through context, differential analysis, and YARA. Prior to version 1.21.0, 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. Version 1.21.0 fixes the issue.

Key dates

02Disclosure timeline

February 27, 2026 CVE published
March 2, 2026 Record updated