Red Hat Product Errata RHSA-2026:30844 - Security Advisory Issued: 2026-06-29 Updated: 2026-06-29 RHSA-2026:30844 - Security Advisory Overview Updated Packages Synopsis Moderate: mod_md security update Type/Severity Security Advisory: Moderate Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic An update for mod_md is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description This module manages common properties of domains for one or more virtual hosts. Specifically it can use the ACME protocol to automate certificate provisioning. Certificates will be configured for managed domains and their virtual hosts automatically, including at renewal. Security Fix(es): httpd: mod_md: unrestricted OCSP response leads to resource exhaustion (CVE-2026-29168) 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. Solution For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Affected Products Red Hat Enterprise Linux for x86_64 9 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.8 x86_64 Red Hat Enterprise Linux for IBM z Systems 9 s390x Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.8 s390x Red Hat Enterprise Linux for Power, little endian 9 ppc64le Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.8 ppc64le Red Hat Enterprise Linux for ARM 64 9 aarch64 Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.8 aarch64 Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.8 ppc64le Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.8 x86_64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.8 aarch64 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.8 s390x Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.8 x86_64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.8 aarch64 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.8 ppc64le Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.8 s390x Fixes BZ - 2466753 - CVE-2026-29168 httpd: mod_md: unrestricted OCSP response leads to resource exhaustion CVEs CVE-2026-29168 References https://access.redhat.com/security/updates/classification/#moderate Note: More recent versions of these packages may be available. Click a package name for more details. Red Hat Enterprise Linux for x86_64 9 SRPM mod_md-2.4.26-2.el9_8.1.src.rpm SHA-256: 324b41e220963d68bce50b5f7fb74db1a1b1a9b5197f8af3d6e26e1a1e260209 x86_64 mod_md-2.4.26-2.el9_8.1.x86_64.rpm SHA-256: 09a37eaf38fdae9e4fd7286d0a43ccb1458a331093749b33698f0972144f6b57 mod_md-debuginfo-2.4.26-2.el9_8.1.x86_64.rpm SHA-256: 21dae1ae278e0a57dd4bb49bd716dc1e64613569d5afe00a22a12ec8cce7392d mod_md-debugsource-2.4.26-2.el9_8.1.x86_64.rpm SHA-256: 698aab4678e63e956b633b85e37643d0391a5fa2f146c69e50b61810209bd0de Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.8 SRPM mod_md-2.4.26-2.el9_8.1.src.rpm SHA-256: 324b41e220963d68bce50b5f7fb74db1a1b1a9b5197f8af3d6e26e1a1e260209 x86_64 mod_md-2.4.26-2.el9_8.1.x86_64.rpm SHA-256: 09a37eaf38fdae9e4fd7286d0a43ccb1458a331093749b33698f0972144f6b57 mod_md-debuginfo-2.4.26-2.el9_8.1.x86_64.rpm SHA-256: 21dae1ae278e0a57dd4bb49bd716dc1e64613569d5afe00a22a12ec8cce7392d mod_md-debugsource-2.4.26-2.el9_8.1.x86_64.rpm SHA-256: 698aab4678e63e956b633b85e37643d0391a5fa2f146c69e50b61810209bd0de Red Hat Enterprise Linux for IBM z Systems 9 SRPM mod_md-2.4.26-2.el9_8.1.src.rpm SHA-256: 324b41e220963d68bce50b5f7fb74db1a1b1a9b5197f8af3d6e26e1a1e260209 s390x mod_md-2.4.26-2.el9_8.1.s390x.rpm SHA-256: 883a7d5fe0bd0fe238d61fee2e51719ad6b5628880caaec23cc91a34c23eb40e mod_md-debuginfo-2.4.26-2.el9_8.1.s390x.rpm SHA-256: 891745056af19322ba07c7e6a372ac8612727fb3b836636c5e4e31aae34b4c86 mod_md-debugsource-2.4.26-2.el9_8.1.s390x.rpm SHA-256: c39796066fc5de1582aacf6fd879b9fccc3394c1535d4976a25120a48b0d8660 Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.8 SRPM mod_md-2.4.26-2.el9_8.1.src.rpm SHA-256: 324b41e220963d68bce50b5f7fb74db1a1b1a9b5197f8af3d6e26e1a1e260209 s390x mod_md-2.4.26-2.el9_8.1.s390x.rpm SHA-256: 883a7d5fe0bd0fe238d61fee2e51719ad6b5628880caaec23cc91a34c23eb40e mod_md-debuginfo-2.4.26-2.el9_8.1.s390x.rpm SHA-256: 891745056af19322ba07c7e6a372ac8612727fb3b836636c5e4e31aae34b4c86 mod_md-debugsource-2.4.26-2.el9_8.1.s390x.rpm SHA-256: c39796066fc5de1582aacf6fd879b9fccc3394c1535d4976a25120a48b0d8660 Red Hat Enterprise Linux for Power, little endian 9 SRPM mod_md-2.4.26-2.el9_8.1.src.rpm SHA-256: 324b41e220963d68bce50b5f7fb74db1a1b1a9b5197f8af3d6e26e1a1e260209 ppc64le mod_md-2.4.26-2.el9_8.1.ppc64le.rpm SHA-256: ba6c9583cfa6696c3fa3bc912aff1d149b6a30b6124968cffdb6f9748685b03b mod_md-debuginfo-2.4.26-2.el9_8.1.ppc64le.rpm SHA-256: e0ddcdb8fa138b847c86da9a761b1183ee3bd29d657e8ef8630e61fb7cba0617 mod_md-debugsource-2.4.26-2.el9_8.1.ppc64le.rpm SHA-256: d6c62b7f390de89ef54e36dfb453287272e60e07d853001080cf9073332a0e67 Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.8 SRPM mod_md-2.4.26-2.el9_8.1.src.rpm SHA-256: 324b41e220963d68bce50b5f7fb74db1a1b1a9b5197f8af3d6e26e1a1e260209 ppc64le mod_md-2.4.26-2.el9_8.1.ppc64le.rpm SHA-256: ba6c9583cfa6696c3fa3bc912aff1d149b6a30b6124968cffdb6f9748685b03b mod_md-debuginfo-2.4.26-2.el9_8.1.ppc64le.rpm SHA-256: e0ddcdb8fa138b847c86da9a761b1183ee3bd29d657e8ef8630e61fb7cba0617 mod_md-debugsource-2.4.26-2.el9_8.1.ppc64le.rpm SHA-256: d6c62b7f390de89ef54e36dfb453287272e60e07d853001080cf9073332a0e67 Red Hat Enterprise Linux for ARM 64 9 SRPM mod_md-2.4.26-2.el9_8.1.src.rpm SHA-256: 324b41e220963d68bce50b5f7fb74db1a1b1a9b5197f8af3d6e26e1a1e260209 aarch64 mod_md-2.4.26-2.el9_8.1.aarch64.rpm SHA-256: 8f11f9960829e0556a618e2b74dbf33cd07b10f63c7d1e79e2500b6b25770038 mod_md-debuginfo-2.4.26-2.el9_8.1.aarch64.rpm SHA-256: 52692f724d7818ccb82f226f97e7c2152b5100d8af1546715d0f7225626ad207 mod_md-debugsource-2.4.26-2.el9_8.1.aarch64.rpm SHA-256: 19dc7746ce85a62a1779bf592620ae0cd7fcdccc8684f6972de08b4b979fdaaa Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.8 SRPM mod_md-2.4.26-2.el9_8.1.src.rpm SHA-256: 324b41e220963d68bce50b5f7fb74db1a1b1a9b5197f8af3d6e26e1a1e260209 aarch64 mod_md-2.4.26-2.el9_8.1.aarch64.rpm SHA-256: 8f11f9960829e0556a618e2b74dbf33cd07b10f63c7d1e79e2500b6b25770038 mod_md-debuginfo-2.4.26-2.el9_8.1.aarch64.rpm SHA-256: 52692f724d7818ccb82f226f97e7c2152b5100d8af1546715d0f7225626ad207 mod_md-debugsource-2.4.26-2.el9_8.1.aarch64.rpm SHA-256: 19dc7746ce85a62a1779bf592620ae0cd7fcdccc8684f6972de08b4b979fdaaa Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.8 SRPM mod_md-2.4.26-2.el9_8.1.src.rpm SHA-256: 324b41e220963d68bce50b5f7fb74db1a1b1a9b5197f8af3d6e26e1a1e260209 ppc64le mod_md-2.4.26-2.el9_8.1.ppc64le.rpm SHA-256: ba6c9583cfa6696c3fa3bc912aff1d149b6a30b6124968cffdb6f9748685b03b mod_md-debuginfo-2.4.26-2.el9_8.1.ppc64le.rpm SHA-256: e0ddcdb8fa138b847c86da9a761b1183ee3bd29d657e8ef8630e61fb7cba0617 mod_md-debugsource-2.4.26-2.el9_8.1.ppc64le.rpm SHA-256: d6c62b7f390de89ef54e36dfb453287272e60e07d853001080cf9073332a0e67 Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.8 SRPM mod_md-2.4.26-2.el9_8.1.src.rpm SHA-256: 324b41e220963d68bce50b5f7fb74db1a1b1a9b5197f8af3d6e26e1a1e260209 x86_64 mod_md-2.4.26-2.el9_8.1.x86_64.rpm SHA-256: 09a37eaf38fdae9e4fd7286d0a43ccb1458a331093749b33698f0972144f6b57 mod_md-debuginfo-2.4.26-2.el9_8.1.x86_64.rpm SHA-256: 21dae1ae278e0a57dd4bb49bd716dc1e64613569d5afe00a22a12ec8cce7392d mod_md-debugsource-2.4.26-2.el9_8.1.x86_64.rpm SHA-256: 698aab4678e63e956b633b85e37643d0391a5fa2f146c69e50b61810209bd0de Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.8 SRPM mod_md-2.4.26-2.el9_8.1.src.rpm SHA-256: 324b41e220963d68bce50b5f7fb74db1a1b1a9b5197f8af3d6e26e1a1e260209 aarch64 mod_md-2.4.26-2.el9_8.1.aarch64.rpm SHA-256: 8f11f9960829e0556a618e2b74dbf33cd07b10f63c7d1e79e2500b6b25770038 mod_md-debuginfo-2.4.26-2.el9_8.1.aarch64.rpm SHA-256: 52692f724d7818ccb82f226f97e7c2152b5100d8af1546715d0f7225626ad207 mod_md-debugsource-2.4.26-2.el9_8.1.aarch64.rpm SHA-256: 19dc7746ce85a62a1779bf592620ae0cd7fcdccc8684f6972de08b4b979fdaaa Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.8 SRPM mod_md-2.4.26-2.el9_8.1.src.rpm SHA-256: 324b41e220963d68bce50b5f7fb74db1a1b1a9b5197f8af3d6e26e1a1e260209 s390x mod_md-2.4.26-2.el9_8.1.s390x.rpm SHA-256: 883a7d5fe0bd0fe238d61fee2e51719ad6b5628880caaec23cc91a34c23eb40e mod_md-debuginfo-2.4.26-2.el9_8.1.s390x.rpm SHA-256: 891745056af19322ba07c7e6a372ac8612727fb3b836636c5e4e31aae34b4c86 mod_md-debugsource-2.4.26-2.el9_8.1.s390x.rpm SHA-256: c39796066fc5de1582aacf6fd879b9fccc3394c1535d4976a25120a48b0d8660 Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.8 SRPM mod_md-2.4.26-2.el9_8.1.src.rpm SHA-256: 324b41e220963d68bce50b5f7fb74db1a1b1a9b5197f8af3d6e26e1a1e260209 x86_64 mod_md-2.4.26-2.el9_8.1.x86_64.rpm SHA-256: 09a37eaf38fdae9e4fd7286d0a43ccb1458a331093749b33698f0972144f6b57 mod_md-debuginfo-2.4.26-2.el9_8.1.x86_64.rpm SHA-256: 21dae1ae278e0a57dd4bb49bd716dc1e64613569d5afe00a22a12ec8cce7392d mod_md-debugsource-2.4.26-2.el9_8.1.x86_64.rpm SHA-256: 698aab4678e63e956b633b85e37643d0391a5fa2f146c69e50b61810209bd0de Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.8 SRPM mod_md-2.4.26-2.el9_8.1.src.rpm SHA-256: 324b41e220963d68bce50b5f7fb74db1a1b1a9b5197f8af3d6e26e1a1e260209 aarch64 mod_md-2.4.26-2.el9_8.1.aarc