CVE-2026-39830 Affecting zarf-fips package, versions <0.76.0-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-ZARFFIPS-17053353
- published29 May 2026
- disclosed22 May 2026
Introduced: 22 May 2026
NewCVE-2026-39830 (opens in a new tab)How to fix?
Upgrade Chainguard zarf-fips to version 0.76.0-r4 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream zarf-fips package and not the zarf-fips package as distributed by Chainguard.
See How to fix? for Chainguard relevant fixed versions and status.
A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the connection's read loop. The blocked goroutine could not be released by calling Close(), resulting in a resource leak per connection. Unsolicited global responses are now discarded.