CVE-2026-42507 Affecting traefik-3 package, versions <3.7.3-r0
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-MINIMOSLATEST-TRAEFIK3-17207574
- published6 Jun 2026
- disclosed2 Jun 2026
Introduced: 2 Jun 2026
NewCVE-2026-42507 (opens in a new tab)How to fix?
Upgrade Minimos:latest traefik-3 to version 3.7.3-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream traefik-3 package and not the traefik-3 package as distributed by Minimos.
See How to fix? for Minimos:latest relevant fixed versions and status.
When returning errors, functions in the net/textproto package would include its input as part of the error. This might allow an attacker to inject misleading content to errors that are printed or logged.
References
- https://www.cve.org/CVERecord?id=CVE-2026-42507
- https://github.com/advisories/GHSA-h3gm-q7m7-mp28
- https://osv.dev/vulnerability/MINI-jg7j-xv6x-6v5x
- https://osv.dev/vulnerability/CVE-2026-42507
- https://go.dev/cl/777060
- https://go.dev/issue/79346
- https://groups.google.com/g/golang-announce/c/tKs3rmcBcKw
- https://pkg.go.dev/vuln/GO-2026-5039