CVE-2026-42505 Affecting rancher-fleet package, versions <0.15.4-r4
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CHAINGUARDLATEST-RANCHERFLEET-17911758
- published9 Jul 2026
- disclosed8 Jul 2026
Introduced: 8 Jul 2026
NewCVE-2026-42505 (opens in a new tab)How to fix?
Upgrade Chainguard rancher-fleet to version 0.15.4-r4 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream rancher-fleet package and not the rancher-fleet package as distributed by Chainguard.
See How to fix? for Chainguard relevant fixed versions and status.
Handshakes which used Encrypted Client Hello could be de-anonymized by a passive network observer due to a disclosure of pre-shared key identities in the unencrypted client hello.