Get real-time updates on Telegram
CVE-2026-49329: Red Hat OpenShift Container Platform 4.20 (exact versions not specified); +3 more affected products
CVE-2026-49329. CVSS 3.1 base score 7.5 (HIGH, Vendor/CNA). EPSS 0.0063 (percentile 0.48362), scored 2026-10-05.
Affected technology
Red Hat OpenShift Container Platform 4.20 · Exact affected versions not specified by the source
Red Hat
Red Hat OpenShift Container Platform 4.21 · Exact affected versions not specified by the source
Red Hat
Red Hat OpenShift Container Platform 4.22 · Exact affected versions not specified by the source
Red Hat
Red Hat OpenShift Container Platform 4 · Exact affected versions not specified by the source
Red Hat
Component: Not specified by the source
Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · No privileges required · No user interaction required
What an attacker can do
An unauthenticated attacker can send a crafted Accept-Language header using '_' separators to trigger quadratic-time parsing, consuming excessive CPU and denying authentication to all cluster users. Vendor/CNA’s CVSS 3.1 assessment (base score 7.5/10) rates confidentiality and integrity impact as none; availability impact as high.
- CWE
- CWE-407
- CCR priority
- 30.2 /100 (P4)
- CVSS 3.1
- 7.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · Vendor/CNA
- EPSS
- 0.0063 · percentile 0.48362 · 2026-10-05
- KEV
- no
Provenance
- NVD CVE API 2.0 · Source record · observed 2026-10-07 02:34:12.333111+00:00 UTC
- GitHub Advisory Database · Source record · observed 2026-10-07 02:36:03.777225+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-49329.html