- Issued:
- 2026-11-11
- Updated:
- 2026-11-11
RHSA-2026:98463 - Security Advisory
Synopsis
Important: cockpit security update
Type/Severity
Security Advisory: Important
Red Hat Lightspeed patch analysis
Identify and remediate systems affected by this advisory.
Topic
An update for cockpit is now available for Red Hat Enterprise Linux 9.
Red Hat Product Security has rated this update as having a security impact of Important. 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
Cockpit enables users to administer GNU/Linux servers using a web browser. It offers network configuration, log inspection, diagnostic reports, SELinux troubleshooting, interactive command-line sessions, and more.
Security Fix(es):
- cockpit: Cockpit: Denial of Service in `cockpit-ws` due to URL-root handling without a trailing slash (CVE-2026-91147)
- cockpit: Cockpit: Denial of Service via unbounded connection thread spawning (CVE-2026-91149)
- cockpit-ws: cockpit: cockpit-ws: unauthenticated remote memory leak via CockpitLang cookie in send_login_html (CVE-2026-76235)
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:
Affected Products
- Red Hat Enterprise Linux for x86_64 9 x86_64
- Red Hat Enterprise Linux for IBM z Systems 9 s390x
- Red Hat Enterprise Linux for Power, little endian 9 ppc64le
- Red Hat Enterprise Linux for ARM 64 9 aarch64
Fixes
- BZ - 2479230 - CVE-2026-91147 cockpit: Cockpit: Denial of Service in `cockpit-ws` due to URL-root handling without a trailing slash
- BZ - 2479422 - CVE-2026-91149 cockpit: Cockpit: Denial of Service via unbounded connection thread spawning
- BZ - 2519497 - CVE-2026-76235 cockpit-ws: cockpit: cockpit-ws: unauthenticated remote memory leak via CockpitLang cookie in send_login_html
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 | |
|---|---|
| cockpit-366.1-1.el9_9.src.rpm | SHA-256: f2ffdaeaa6c4f844f29f7b35b3a7e302235b2fc14f9eb04cee104d8389688243 |
| x86_64 | |
| cockpit-366.1-1.el9_9.x86_64.rpm | SHA-256: ba92c5650502399a7486cc5150dc1f8bb368b2ca6d414606eb6878299abed243 |
| cockpit-bridge-366.1-1.el9_9.noarch.rpm | SHA-256: e1a671065894b68a3e965cb3a4f06e647d2c2f115a3efa668c713b5d593ace16 |
| cockpit-debuginfo-366.1-1.el9_9.x86_64.rpm | SHA-256: 341bbe3844c8a0b15c2b98dad4eb5fc01cf11ca9ede49f8ca3651147d217345d |
| cockpit-debugsource-366.1-1.el9_9.x86_64.rpm | SHA-256: f22d3e6945172516cf8f1193a221ca462a1f7d04e4c1dec64b33f5bd672f5710 |
| cockpit-doc-366.1-1.el9_9.noarch.rpm | SHA-256: 694c15f06e40943865a00f26d4b1e562459a8d9c463d0115b7cfe19a2bed70cf |
| cockpit-packagekit-366.1-1.el9_9.noarch.rpm | SHA-256: 78a8663594a7389ecd9a33847333d768ec26f8441990ee1cd0ad51295445340f |
| cockpit-storaged-366.1-1.el9_9.noarch.rpm | SHA-256: 64946809663083195a5848eed3d9cbb3a4105ff685acae4e50359ecacce0c497 |
| cockpit-system-366.1-1.el9_9.noarch.rpm | SHA-256: 7860cde9c4593af3a98e31667e03ae2c1aeab03975cff8c0e9738b7590d59823 |
| cockpit-ws-366.1-1.el9_9.x86_64.rpm | SHA-256: 2f85ebf66ad938e5242989e68734f96a318e50ae5e806b42e85d26d6854f7920 |
| cockpit-ws-selinux-366.1-1.el9_9.x86_64.rpm | SHA-256: 664ca808316e9292874dfca6d811a7659bf243686aec054e425799f8c6944c18 |
Red Hat Enterprise Linux for IBM z Systems 9
| SRPM | |
|---|---|
| cockpit-366.1-1.el9_9.src.rpm | SHA-256: f2ffdaeaa6c4f844f29f7b35b3a7e302235b2fc14f9eb04cee104d8389688243 |
| s390x | |
| cockpit-366.1-1.el9_9.s390x.rpm | SHA-256: 7dbc870942e8a927c8b60a3e98733d04c3dd596110120dd24a6ce9630b37d77d |
| cockpit-bridge-366.1-1.el9_9.noarch.rpm | SHA-256: e1a671065894b68a3e965cb3a4f06e647d2c2f115a3efa668c713b5d593ace16 |
| cockpit-debuginfo-366.1-1.el9_9.s390x.rpm | SHA-256: 5e34489171340bca08ff20b4775fc16c117c9312a32926453997db37b7c029fe |
| cockpit-debugsource-366.1-1.el9_9.s390x.rpm | SHA-256: 1acfc63b51b288dbd988332501bd57d04714f04fc38f03530971a60ac3059473 |
| cockpit-doc-366.1-1.el9_9.noarch.rpm | SHA-256: 694c15f06e40943865a00f26d4b1e562459a8d9c463d0115b7cfe19a2bed70cf |
| cockpit-packagekit-366.1-1.el9_9.noarch.rpm | SHA-256: 78a8663594a7389ecd9a33847333d768ec26f8441990ee1cd0ad51295445340f |
| cockpit-storaged-366.1-1.el9_9.noarch.rpm | SHA-256: 64946809663083195a5848eed3d9cbb3a4105ff685acae4e50359ecacce0c497 |
| cockpit-system-366.1-1.el9_9.noarch.rpm | SHA-256: 7860cde9c4593af3a98e31667e03ae2c1aeab03975cff8c0e9738b7590d59823 |
| cockpit-ws-366.1-1.el9_9.s390x.rpm | SHA-256: b1ab1309ffd40828f6747e3c13492fb9a74c89907b5718e00079832f39855305 |
| cockpit-ws-selinux-366.1-1.el9_9.s390x.rpm | SHA-256: 2645ed9143e951ff2ba9585de16e2c30cfb128136d5de27cacfb688ffb2ccba2 |
Red Hat Enterprise Linux for Power, little endian 9
| SRPM | |
|---|---|
| cockpit-366.1-1.el9_9.src.rpm | SHA-256: f2ffdaeaa6c4f844f29f7b35b3a7e302235b2fc14f9eb04cee104d8389688243 |
| ppc64le | |
| cockpit-366.1-1.el9_9.ppc64le.rpm | SHA-256: 3e219cfed221645fc1df68b5ea5d35ceb7197b70c072d656df30ae81f145995f |
| cockpit-bridge-366.1-1.el9_9.noarch.rpm | SHA-256: e1a671065894b68a3e965cb3a4f06e647d2c2f115a3efa668c713b5d593ace16 |
| cockpit-debuginfo-366.1-1.el9_9.ppc64le.rpm | SHA-256: 321e688f765f00ef4e37f00c2c6c34a14fcde2ceaab862e0886d7176f7befad9 |
| cockpit-debugsource-366.1-1.el9_9.ppc64le.rpm | SHA-256: e322f9536ea552ba87a7d12e1d4315ea5aa58b8dc3d54de6185add3eb6866dd5 |
| cockpit-doc-366.1-1.el9_9.noarch.rpm | SHA-256: 694c15f06e40943865a00f26d4b1e562459a8d9c463d0115b7cfe19a2bed70cf |
| cockpit-packagekit-366.1-1.el9_9.noarch.rpm | SHA-256: 78a8663594a7389ecd9a33847333d768ec26f8441990ee1cd0ad51295445340f |
| cockpit-storaged-366.1-1.el9_9.noarch.rpm | SHA-256: 64946809663083195a5848eed3d9cbb3a4105ff685acae4e50359ecacce0c497 |
| cockpit-system-366.1-1.el9_9.noarch.rpm | SHA-256: 7860cde9c4593af3a98e31667e03ae2c1aeab03975cff8c0e9738b7590d59823 |
| cockpit-ws-366.1-1.el9_9.ppc64le.rpm | SHA-256: 54a2a9909c0078d46db53ed4a7234315b109af05429b2cc309cac24ecdd0f770 |
| cockpit-ws-selinux-366.1-1.el9_9.ppc64le.rpm | SHA-256: 522c1e9d169227f40820e25c8ac4a465c24b45723429757e34ced3cef1b6cd19 |
Red Hat Enterprise Linux for ARM 64 9
| SRPM | |
|---|---|
| cockpit-366.1-1.el9_9.src.rpm | SHA-256: f2ffdaeaa6c4f844f29f7b35b3a7e302235b2fc14f9eb04cee104d8389688243 |
| aarch64 | |
| cockpit-366.1-1.el9_9.aarch64.rpm | SHA-256: f7380a1a6370ddb536951f94a7093b65f920c1f6d186d5c929e4b79db8472ac7 |
| cockpit-bridge-366.1-1.el9_9.noarch.rpm | SHA-256: e1a671065894b68a3e965cb3a4f06e647d2c2f115a3efa668c713b5d593ace16 |
| cockpit-debuginfo-366.1-1.el9_9.aarch64.rpm | SHA-256: 7194468a40f3099cd3849e73aff05864e55802e2315aa8b018d2628c260c23ff |
| cockpit-debugsource-366.1-1.el9_9.aarch64.rpm | SHA-256: 79411f39a93537e446b339259f63b28be102103210a7f73ed71b035d88d8c720 |
| cockpit-doc-366.1-1.el9_9.noarch.rpm | SHA-256: 694c15f06e40943865a00f26d4b1e562459a8d9c463d0115b7cfe19a2bed70cf |
| cockpit-packagekit-366.1-1.el9_9.noarch.rpm | SHA-256: 78a8663594a7389ecd9a33847333d768ec26f8441990ee1cd0ad51295445340f |
| cockpit-storaged-366.1-1.el9_9.noarch.rpm | SHA-256: 64946809663083195a5848eed3d9cbb3a4105ff685acae4e50359ecacce0c497 |
| cockpit-system-366.1-1.el9_9.noarch.rpm | SHA-256: 7860cde9c4593af3a98e31667e03ae2c1aeab03975cff8c0e9738b7590d59823 |
| cockpit-ws-366.1-1.el9_9.aarch64.rpm | SHA-256: c994a4391fe8b0ffa98419785fc3a779dd1f00684eb5d59124905b5621f1fcf5 |
| cockpit-ws-selinux-366.1-1.el9_9.aarch64.rpm | SHA-256: 6d633bdf54fc34e1e89c7b43335904e0cc1870d3a8a9c57403d578e5ea3e81a6 |
The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
