ALPINE-CVE-2026-11721
- Source
- https://security.alpinelinux.org/vuln/CVE-2026-11721
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-11721.json
- JSON Data
- https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-11721
- Upstream
- Published
- 2026-07-22T15:16:51.837Z
- Modified
- 2026-07-25T19:30:06.263058077Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
- Summary
- [none]
- Details
-
It is possible for an attacker's zone to respond to a query with an RRSIG that has a smaller number of labels than the zone in which the RRSIG is contained. This causes
namedto produce a wildcard name for a zone that is shorter than the attacker's zone, which can result in cache poisoning. For this attack to have any effect, the resolver under attack must have setsynth-from-dnssec yes;(which is the default). This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1. - References
Affected packages
Alpine:v3.22 / bind
Package
- Name
- bind
- Purl
- pkg:apk/alpine/bind?arch=source
Alpine:v3.23 / bind
Package
- Name
- bind
- Purl
- pkg:apk/alpine/bind?arch=source