VDB
RHSA-2026:70615
RHSA-2026:70615
PUBLISHED
CVSS 8.600000381469727 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
8.600000381469727
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | rhcos-x86_64-418.94.202609171815-0 as a component of Red Hat OpenShift Container Platform 4.18 | 418.94.202609171815-0 |
| Red Hat | rhcos-s390x-418.94.202609171815-0 as a component of Red Hat OpenShift Container Platform 4.18 | 418.94.202609171815-0 |
| Red Hat | rhcos-ppc64le-418.94.202609171815-0 as a component of Red Hat OpenShift Container Platform 4.18 | 418.94.202609171815-0 |
| Red Hat | rhcos-aarch64-418.94.202609171815-0 as a component of Red Hat OpenShift Container Platform 4.18 | 418.94.202609171815-0 |
Timeline
- Oct 1, 2026 CVE Published
- Oct 3, 2026 CVE Updated
- Oct 3, 2026 Distribution Patch
- Oct 3, 2026 Distribution Patch
- Oct 3, 2026 Security Advisory
- Oct 3, 2026 Security Advisory
- Oct 3, 2026 Security Advisory
- Oct 3, 2026 Security Advisory
- Oct 3, 2026 Security Advisory
- Oct 3, 2026 Security Advisory
- Oct 3, 2026 Security Advisory
- Oct 3, 2026 Security Advisory
References
- https://access.redhat.com/errata/RHSA-2026:70615 advisory
- https://access.redhat.com/security/updates/classification/#important advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2419455 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2459963 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2479767 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2479771 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2493411 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2500889 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2503721 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2504166 issue
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_70615.json advisory
- https://access.redhat.com/security/cve/CVE-2025-66418 advisory
- 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://access.redhat.com/security/cve/CVE-2026-3039 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-3039 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-3039 advisory
- https://access.redhat.com/security/cve/CVE-2026-5946 advisory
…and 21 more