VDB
RHSA-2026%3A3444
RHSA-2026%3A3444
PUBLISHED
CVSS 7.5 HIGH
A flaw was found in urllib3 Python library that could lead to a Denial of Service condition. A remote, malicious server can exploit this flaw by responding to a client request with an HTTP message that uses an excessive number of chained compression algorithms. This unlimited decompression chain causes the client system to consume a virtually unbounded amount of CPU resources and memory. The high resource usage leads to service disruption, making the application unresponsive.
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | registry.redhat.io/oadp/oadp-rhel9-operator@sha256:8b2314048002ee2bf544aef4e0de213e43f1240f77903fbf1320e92dd2a03583_amd64 as a component of OpenShift API for Data Protection 1.3 | *, *, * |
| Red Hat | registry.redhat.io/oadp/oadp-velero-rhel9@sha256:919c3da70d7486637db637b5bfcfd74245ec6dcfb345a81892444217ebe4b38e_s390x as a component of OpenShift API for Data Protection 1.3 | registry.redhat.io/oadp/oadp-velero-rhel9@sha256:919c3da70d7486637db637b5bfcfd74245ec6dcfb345a81892444217ebe4b38e_s390x, registry.redhat.io/oadp/oadp-velero-rhel9@sha256:919c3da70d7486637db637b5bfcfd74245ec6dcfb345a81892444217ebe4b38e_s390x, registry.redhat.io/oadp/oadp-velero-rhel9@sha256:919c3da70d7486637db637b5bfcfd74245ec6dcfb345a81892444217ebe4b38e_s390x |
| Red Hat | registry.redhat.io/oadp/oadp-velero-restic-restore-helper-rhel9@sha256:703b09a965dca536e753508c7b988705e536fd2f3083064fc874cc170dbd7830_s390x as a component of OpenShift API for Data Protection 1.3 | registry.redhat.io/oadp/oadp-velero-restic-restore-helper-rhel9@sha256:703b09a965dca536e753508c7b988705e536fd2f3083064fc874cc170dbd7830_s390x, *, registry.redhat.io/oadp/oadp-velero-restic-restore-helper-rhel9@sha256:703b09a965dca536e753508c7b988705e536fd2f3083064fc874cc170dbd7830_s390x |
| Red Hat | registry.redhat.io/oadp/oadp-velero-restic-restore-helper-rhel9@sha256:3e4c50cecce698734987bef5b51b26b030f87c36cf2ad0207680132bab5d350e_arm64 as a component of OpenShift API for Data Protection 1.3 | registry.redhat.io/oadp/oadp-velero-restic-restore-helper-rhel9@sha256:3e4c50cecce698734987bef5b51b26b030f87c36cf2ad0207680132bab5d350e_arm64, registry.redhat.io/oadp/oadp-velero-restic-restore-helper-rhel9@sha256:3e4c50cecce698734987bef5b51b26b030f87c36cf2ad0207680132bab5d350e_arm64, registry.redhat.io/oadp/oadp-velero-restic-restore-helper-rhel9@sha256:3e4c50cecce698734987bef5b51b26b030f87c36cf2ad0207680132bab5d350e_arm64 |
| Red Hat | registry.redhat.io/oadp/oadp-velero-plugin-for-microsoft-azure-rhel9@sha256:97bfdd89e24733dbac4f4493e1ba40160263ef9deec22730658dea2a1eb315bf_s390x as a component of OpenShift API for Data Protection 1.3 | *, *, * |
| Red Hat | registry.redhat.io/oadp/oadp-velero-plugin-for-gcp-rhel9@sha256:16c1e6d558e7bc95b3fe0a3ec404ba2a84c70b964d64f2da7c695a81f31b5c99_amd64 as a component of OpenShift API for Data Protection 1.3 | registry.redhat.io/oadp/oadp-velero-plugin-for-gcp-rhel9@sha256:16c1e6d558e7bc95b3fe0a3ec404ba2a84c70b964d64f2da7c695a81f31b5c99_amd64, registry.redhat.io/oadp/oadp-velero-plugin-for-gcp-rhel9@sha256:16c1e6d558e7bc95b3fe0a3ec404ba2a84c70b964d64f2da7c695a81f31b5c99_amd64, * |
| Red Hat | registry.redhat.io/oadp/oadp-velero-plugin-for-aws-rhel9@sha256:ef9a25f2f34bfb96e94f29665ea8f8a203aab402c4bdd79e1b8a065655b37b84_s390x as a component of OpenShift API for Data Protection 1.3 | registry.redhat.io/oadp/oadp-velero-plugin-for-aws-rhel9@sha256:ef9a25f2f34bfb96e94f29665ea8f8a203aab402c4bdd79e1b8a065655b37b84_s390x, registry.redhat.io/oadp/oadp-velero-plugin-for-aws-rhel9@sha256:ef9a25f2f34bfb96e94f29665ea8f8a203aab402c4bdd79e1b8a065655b37b84_s390x, registry.redhat.io/oadp/oadp-velero-plugin-for-aws-rhel9@sha256:ef9a25f2f34bfb96e94f29665ea8f8a203aab402c4bdd79e1b8a065655b37b84_s390x |
| Red Hat | registry.redhat.io/oadp/oadp-mustgather-rhel9@sha256:8824dd1093397de37d201f3bf22bde613014ea1a534188a405d2bde1ab4f1aac_amd64 as a component of OpenShift API for Data Protection 1.3 | registry.redhat.io/oadp/oadp-mustgather-rhel9@sha256:8824dd1093397de37d201f3bf22bde613014ea1a534188a405d2bde1ab4f1aac_amd64, registry.redhat.io/oadp/oadp-mustgather-rhel9@sha256:8824dd1093397de37d201f3bf22bde613014ea1a534188a405d2bde1ab4f1aac_amd64, registry.redhat.io/oadp/oadp-mustgather-rhel9@sha256:8824dd1093397de37d201f3bf22bde613014ea1a534188a405d2bde1ab4f1aac_amd64 |
| Red Hat | registry.redhat.io/oadp/oadp-kubevirt-velero-plugin-rhel9@sha256:b9c6a326e2cc6b45e5fb491c3e2b284d7f519f7decdeeacc724cd30f73a80fd3_amd64 | |
| Red Hat | registry.redhat.io/oadp/oadp-mustgather-rhel9@sha256:109587c1ef0a80adb21b00a69b3ed5b87de5b025b22d0c89ca3b36b3a956f538_arm64 as a component of OpenShift API for Data Protection 1.3 | registry.redhat.io/oadp/oadp-mustgather-rhel9@sha256:109587c1ef0a80adb21b00a69b3ed5b87de5b025b22d0c89ca3b36b3a956f538_arm64, registry.redhat.io/oadp/oadp-mustgather-rhel9@sha256:109587c1ef0a80adb21b00a69b3ed5b87de5b025b22d0c89ca3b36b3a956f538_arm64, * |
| Red Hat | registry.redhat.io/oadp/oadp-velero-plugin-for-csi-rhel9@sha256:5a401aebb70eb3585b95d67db06bac7cc7a929ffdf97675230f16ba97e62d65c_ppc64le as a component of OpenShift API for Data Protection 1.3 | registry.redhat.io/oadp/oadp-velero-plugin-for-csi-rhel9@sha256:5a401aebb70eb3585b95d67db06bac7cc7a929ffdf97675230f16ba97e62d65c_ppc64le, registry.redhat.io/oadp/oadp-velero-plugin-for-csi-rhel9@sha256:5a401aebb70eb3585b95d67db06bac7cc7a929ffdf97675230f16ba97e62d65c_ppc64le, * |
| Red Hat | registry.redhat.io/oadp/oadp-velero-plugin-for-gcp-rhel9@sha256:18ccbc9f2c17fc4a6df7b09e85eb1e2646b59eaaa2d22a827ab7b5c2c50f68fb_ppc64le as a component of OpenShift API for Data Protection 1.3 | registry.redhat.io/oadp/oadp-velero-plugin-for-gcp-rhel9@sha256:18ccbc9f2c17fc4a6df7b09e85eb1e2646b59eaaa2d22a827ab7b5c2c50f68fb_ppc64le, registry.redhat.io/oadp/oadp-velero-plugin-for-gcp-rhel9@sha256:18ccbc9f2c17fc4a6df7b09e85eb1e2646b59eaaa2d22a827ab7b5c2c50f68fb_ppc64le, registry.redhat.io/oadp/oadp-velero-plugin-for-gcp-rhel9@sha256:18ccbc9f2c17fc4a6df7b09e85eb1e2646b59eaaa2d22a827ab7b5c2c50f68fb_ppc64le |
| Red Hat | registry.redhat.io/oadp/oadp-velero-plugin-for-aws-rhel9@sha256:c716d6ffafd061dd6f5fdaac156f02482fd2246292f24a0a72ff7fed4a50a522_arm64 as a component of OpenShift API for Data Protection 1.3 | *, registry.redhat.io/oadp/oadp-velero-plugin-for-aws-rhel9@sha256:c716d6ffafd061dd6f5fdaac156f02482fd2246292f24a0a72ff7fed4a50a522_arm64, registry.redhat.io/oadp/oadp-velero-plugin-for-aws-rhel9@sha256:c716d6ffafd061dd6f5fdaac156f02482fd2246292f24a0a72ff7fed4a50a522_arm64 |
| Red Hat | registry.redhat.io/oadp/oadp-velero-plugin-rhel9@sha256:19d93015a4fe1363da5bd4acacf0a3f3812d2980055a8e6bb15dd668d018ec74_arm64 as a component of OpenShift API for Data Protection 1.3 | *, registry.redhat.io/oadp/oadp-velero-plugin-rhel9@sha256:19d93015a4fe1363da5bd4acacf0a3f3812d2980055a8e6bb15dd668d018ec74_arm64, * |
| Red Hat | registry.redhat.io/oadp/oadp-kubevirt-velero-plugin-rhel9@sha256:59048e201ffb74e7f1f134b80b661379715d8e00ed4326475b691e50eabd22c8_ppc64le as a component of OpenShift API for Data Protection 1.3 | *, *, * |
| Red Hat | registry.redhat.io/oadp/oadp-rhel9-operator@sha256:4226fa8fa7e6db8073217852c948d18cac9aa75d772c647fb57e38791f96653a_s390x as a component of OpenShift API for Data Protection 1.3 | registry.redhat.io/oadp/oadp-rhel9-operator@sha256:4226fa8fa7e6db8073217852c948d18cac9aa75d772c647fb57e38791f96653a_s390x, *, * |
| Red Hat | registry.redhat.io/oadp/oadp-rhel9-operator@sha256:8b2314048002ee2bf544aef4e0de213e43f1240f77903fbf1320e92dd2a03583_amd64 as a component of OpenShift API for Data Protection 1.3 | registry.redhat.io/oadp/oadp-rhel9-operator@sha256:8b2314048002ee2bf544aef4e0de213e43f1240f77903fbf1320e92dd2a03583_amd64, registry.redhat.io/oadp/oadp-rhel9-operator@sha256:8b2314048002ee2bf544aef4e0de213e43f1240f77903fbf1320e92dd2a03583_amd64, registry.redhat.io/oadp/oadp-rhel9-operator@sha256:8b2314048002ee2bf544aef4e0de213e43f1240f77903fbf1320e92dd2a03583_amd64 |
| Red Hat | registry.redhat.io/oadp/oadp-mustgather-rhel9@sha256:971850db6edd5189eb3268f74fa8240c9c2c61d168b9652d861a9e36d5f7183b_s390x as a component of OpenShift API for Data Protection 1.3 | *, *, registry.redhat.io/oadp/oadp-mustgather-rhel9@sha256:971850db6edd5189eb3268f74fa8240c9c2c61d168b9652d861a9e36d5f7183b_s390x |
| Red Hat | registry.redhat.io/oadp/oadp-velero-restic-restore-helper-rhel9@sha256:703b09a965dca536e753508c7b988705e536fd2f3083064fc874cc170dbd7830_s390x as a component of OpenShift API for Data Protection 1.3 | registry.redhat.io/oadp/oadp-velero-restic-restore-helper-rhel9@sha256:703b09a965dca536e753508c7b988705e536fd2f3083064fc874cc170dbd7830_s390x, *, registry.redhat.io/oadp/oadp-velero-restic-restore-helper-rhel9@sha256:703b09a965dca536e753508c7b988705e536fd2f3083064fc874cc170dbd7830_s390x |
…and 66 more
Timeline
- Feb 26, 2026 CVE Published
- Apr 24, 2026 Distribution Patch
- Apr 24, 2026 Distribution Patch
- Apr 24, 2026 Security Advisory
- Apr 24, 2026 Security Advisory
- Apr 24, 2026 Security Advisory
- Apr 24, 2026 Security Advisory
- Jul 18, 2026 CVE Updated
References
- https://access.redhat.com/errata/RHSA-2026:3444 advisory
- https://access.redhat.com/security/cve/CVE-2025-66418 advisory
- https://access.redhat.com/security/cve/CVE-2025-66471 advisory
- https://access.redhat.com/security/cve/CVE-2026-21441 advisory
- https://access.redhat.com/security/updates/classification/ advisory
- https://docs.redhat.com/en/documentation/openshift_container_platform/latest/html/backup_and_restore/oadp-application-backup-and-restore advisory
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_3444.json advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2419455 issue
- https://www.cve.org/CVERecord?id=CVE-2025-66418 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2025-66418 advisory
- https://github.com/urllib3/urllib3/commit/24d7b67eac89f94e11003424bcf0d8f7b72222a8 advisory
- https://github.com/urllib3/urllib3/security/advisories/GHSA-gm62-xv2j-4w53 advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2419467 issue
- https://www.cve.org/CVERecord?id=CVE-2025-66471 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2025-66471 advisory
- https://github.com/urllib3/urllib3/commit/c19571de34c47de3a766541b041637ba5f716ed7 advisory
- https://github.com/urllib3/urllib3/security/advisories/GHSA-2xpw-w6gg-jr37 advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2427726 issue
- https://www.cve.org/CVERecord?id=CVE-2026-21441 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-21441 advisory
…and 2 more