CVE search · CVE-2026-31837
CVE-2026-31837
high 8.7
Istio is an open platform to connect, manage, and secure microservices. Prior to 1.29.1, 1.28.5, and 1.27.8, a user of Istio is impacted if the JWKS resolver becomes unavailable or the fetch fails, exposing hardcoded defaults regardless of use of the RequestAuthentication resource. This vulnerability is fixed in 1.29.1, 1.28.5, and 1.27.8.
Details
- Status
- Modified
- Published
- Last changed
- Source
- security-advisories@github.com
Severity
| Version | Score | Vector | Source |
|---|---|---|---|
| CVSS 4.0 | high 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
security-advisories@github.comSecondary |
| CVSS 3.1 | high 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
nvd@nist.govPrimary |
| CVSS 3.1 | high 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
0b0ca135-0b70-47e7-9f44-1890c2a1c46cSecondary |
Affected products
Vendor and product from the NVD’s CPE applicability statements. Versions and conditions are on the NVD’s page.
- istio · istio
References
- https://github.com/istio/istio/security/advisories/GHSA-v75c-crr9-733cVendor Advisory
- https://access.redhat.com/errata/RHSA-2026:10184
- https://access.redhat.com/errata/RHSA-2026:5948
- https://access.redhat.com/errata/RHSA-2026:5950
- https://access.redhat.com/errata/RHSA-2026:5952
- https://access.redhat.com/security/cve/CVE-2026-31837
- https://bugzilla.redhat.com/show_bug.cgi?id=2446344
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31837.json