What’s Vulnerable › Vulnerabilities

CVE-2019-18817

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-11-12 · updated 2026-06-17
• Weakness: CWE-835

Description

Istio 1.3.x before 1.3.5 allows Denial of Service because continue_on_listener_filters_timeout is set to True, a related issue to CVE-2019-18836.

Affected products

• istio: from 1.3 before 1.3.5 — fixed in 1.3.5

How to fix

Upgrade to a fixed version: istio 1.3.5. Check the vendor advisory for mitigations.

References

• https://github.com/istio/istio/issues/18229
• https://istio.io/news/2019/announcing-1.3.5/
• https://github.com/istio/istio/issues/18229
• https://istio.io/news/2019/announcing-1.3.5/

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