Kurz gesagt
- CVE-2026-39350 ist eine Schwachstelle (MITTEL (CVSS 5.4)) in istio.io/istio, istio (istio).
- Wahrscheinlichkeit einer Ausnutzung in den nächsten 30 Tagen (EPSS): 0.21%, höher als bei 11.1% aller Schwachstellen.
- Abhilfe: auf 0.0.0-20260403004500-692e460c342d, 1.27.9, 1.28.6, 1.29.2 oder neuer aktualisieren.
| Package | Affected versions | Patched versions |
|---|
| istio.io/istio Go | ≥ 0.0.0-20241024090207-0bf27d49ba4b, < 0.0.0-20260403004500-692e460c342d
| 0.0.0-20260403004500-692e460c342d
|
| istio | ≥ 1.25.0, < 1.27.9≥ 1.28.0, < 1.28.6≥ 1.29.0, < 1.29.2
| 1.27.91.28.61.29.2
|
Description
Impact
The serviceAccounts and notServiceAccounts fields in AuthorizationPolicy incorrectly interpret dots (.) as a regular expression matcher. Because . is a valid character in a service account name, an AuthorizationPolicy ALLOW rule targeting SA e.g. cert-manager.io also matches cert-manager-io, cert-managerXio, etc. A DENY rule targeting the same name fails to block those variants.
Patches
Fixes are available in 1.29.2, 1.28.6, and 1.27.9
Workarounds
None
NVD description
Istio is an open platform to connect, manage, and secure microservices. In versions 1.25.0 through 1.27.8, 1.28.0 through 1.28.5, 1.29.0, and 1.29.1, the serviceAccounts and notServiceAccounts fields in AuthorizationPolicy incorrectly interpret dots (.) as a regular expression matcher. Because . is a valid character in a service account name, an AuthorizationPolicy ALLOW rule targeting a service account such as cert-manager.io also matches cert-manager-io, cert-managerXio, etc. A DENY rule targeting the same name fails to block those variants. Fixes are available in versions 1.29.2, 1.28.6, and 1.27.9.
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