Incorrect Conversion between Numeric Types Affecting cloudflared package, versions <2026.2.0-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.07% (22nd percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-CLOUDFLARED-15246574
  • published7 Feb 2026
  • disclosed9 Sept 2025

Introduced: 9 Sep 2025

CVE-2025-58063  (opens in a new tab)
CWE-681  (opens in a new tab)

How to fix?

Upgrade Chainguard cloudflared to version 2026.2.0-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream cloudflared package and not the cloudflared package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

CoreDNS is a DNS server that chains plugins. Starting in version 1.2.0 and prior to version 1.12.4, the CoreDNS etcd plugin contains a TTL confusion vulnerability where lease IDs are incorrectly used as TTL values, enabling DNS cache pinning attacks. This effectively creates a DoS condition for DNS resolution of affected services. The TTL() function in plugin/etcd/etcd.go incorrectly casts etcd lease IDs (64-bit integers) to uint32 and uses them as TTL values. Large lease IDs become very large TTLs when cast to uint32. This enables cache pinning attacks. Version 1.12.4 contains a fix for the issue.

CVSS Base Scores

version 3.1