ruby
zlib
Affected and fixed version statements observed in the public BlackTree CVE catalogue. These statements describe vulnerability scope, not publisher support entitlement.
Official registry publication history is available at zlib, but registry activity is not a publisher support boundary.
A missing support date does not mean the product is supported. CVE publication dates and affected-version ranges must not be interpreted as EOL dates.
CVE-observed version history
| CVE | Published | Affected versions | Fixed version information | Publisher evidence |
|---|---|---|---|---|
| CVE-2026-27820 | 16 Apr 2026 | < 3.0.1; >= 3.1.0, < 3.1.2; >= 3.2.0, < 3.2.3 | For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 | Update reference ↗ |
How this record is maintained
The CVE inventory is reconciled automatically from cve.blacktree.nl. Exact identity matches link to existing Lifecycle product or package histories. Unmatched products stay in a prioritised publisher-source research queue, and Lifecycle marks the date gap instead of inferring a support boundary from vulnerability data.