RHSA-2026:55784: Important: unbound security update
The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fix(es): unbound: Unbound: Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes (CVE-2026-44690) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
redhat/unboundto a version that resolves this vulnerability.Fixed in 1.16.2-5.14.el8_10 - Upgrade
Upgrade
redhat/python3-unboundto a version that resolves this vulnerability.Fixed in 1.16.2-5.14.el8_10 - Upgrade
Upgrade
redhat/python3-unbound-debuginfoto a version that resolves this vulnerability.Fixed in 1.16.2-5.14.el8_10 - Upgrade
Upgrade
redhat/unbound-debuginfoto a version that resolves this vulnerability.Fixed in 1.16.2-5.14.el8_10 - Upgrade
Upgrade
redhat/unbound-debugsourceto a version that resolves this vulnerability.Fixed in 1.16.2-5.14.el8_10 - Upgrade
Upgrade
redhat/unbound-develto a version that resolves this vulnerability.Fixed in 1.16.2-5.14.el8_10 - Upgrade
Upgrade
redhat/unbound-libsto a version that resolves this vulnerability.Fixed in 1.16.2-5.14.el8_10 - Upgrade
Upgrade
redhat/unbound-libs-debuginfoto a version that resolves this vulnerability.Fixed in 1.16.2-5.14.el8_10 - Upgrade
Upgrade
redhat/python3-unboundto a version that resolves this vulnerability.Fixed in 1.16.2-5.14.el8_10.aa - Upgrade
Upgrade
redhat/python3-unbound-debuginfoto a version that resolves this vulnerability.Fixed in 1.16.2-5.14.el8_10.aa - Upgrade
Upgrade
redhat/unboundto a version that resolves this vulnerability.Fixed in 1.16.2-5.14.el8_10.aa - Upgrade
Upgrade
redhat/unbound-debuginfoto a version that resolves this vulnerability.Fixed in 1.16.2-5.14.el8_10.aa - Upgrade
Upgrade
redhat/unbound-debugsourceto a version that resolves this vulnerability.Fixed in 1.16.2-5.14.el8_10.aa - Upgrade
Upgrade
redhat/unbound-develto a version that resolves this vulnerability.Fixed in 1.16.2-5.14.el8_10.aa - Upgrade
Upgrade
redhat/unbound-libsto a version that resolves this vulnerability.Fixed in 1.16.2-5.14.el8_10.aa - Upgrade
Upgrade
redhat/unbound-libs-debuginfoto a version that resolves this vulnerability.Fixed in 1.16.2-5.14.el8_10.aa - Compensating control
Apply the unbound security update addressing “Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes” (CVE-2026-44690) by following the update instructions in the referenced advisory (Red Hat article 11258).
Event History
Frequently Asked Questions
What is the severity of RHSA-2026:55784?
The severity of RHSA-2026:55784 is classified as important.
How do I fix RHSA-2026:55784?
To fix RHSA-2026:55784, update the unbound packages to the latest version provided by Red Hat.
What vulnerabilities does RHSA-2026:55784 address?
RHSA-2026:55784 addresses a cache poisoning vulnerability via insufficient RRSIG labels validation and premature cache writes (CVE-2026-44690).
Which packages are affected by RHSA-2026:55784?
The affected packages include redhat/unbound, redhat/python3-unbound, and their associated debuginfo and development packages.
When was RHSA-2026:55784 published?
RHSA-2026:55784 was published on August 17, 2026.