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TI-2019-13553 Aliases CVE-2019-18817GHSA-vc7h-cmp3-4hw5

Istio 1.3.x before 1.3.5 allows Denial of Service because…

Priority LOW 35CWE-835Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-835.

Summary

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.

Why it matters now

EPSS 0.01214 68th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed istio.io/istio (Go): 1.3.5

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—istio.io/istio (Go)1.3.0 to before 1.3.51.3.5Patch availableGHSA-vc7h-cmp3-4hw5
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • istio.io/istio (Go) Vendor— Affected 1.3.0 to before 1.3.5 Fixed in 1.3.5 Patch available GHSA-vc7h-cmp3-4hw5

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*1.3 to before 1.3.5Vulnerableistio
  • cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:* Versions 1.3 to before 1.3.5 Vulnerable ·istio

Remediation

  • Fix · GHSA-vc7h-cmp3-4hw5 istio.io/istio (Go) Fixed in 1.3.5 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

Not affected: 1 product
  • OpenShift Service Mesh 1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-18817
  2. 2026-10-03 Alias added: GHSA-vc7h-cmp3-4hw5

References

Exploit 1

Advisory 2

Other 4

  • TI-2026-79288 Out-of-bounds write in Google Brotli decoder KEVCVSS 4.0CRITICAL 9.2
  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2022-06055 Authorization Policy bypass in Istio CVSS 3.1CRITICAL 9.8
  • TI-2021-11909 Istio before 1.8.6 and 1.9.x before 1.9.5 contains a remotely exploitable vulnerability… CVSS 3.1CRITICAL 9.8
  • TI-2026-24390 Istio JWKS resolver to prevent private key material from being exposed when JWKS fetch fails. CVSS 4.0HIGH 8.7
  • TI-2022-13090 Ill-formed headers may lead to unexpected behavior in Istio CVSS 3.1CRITICAL 9.8
See all 28 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences