Is github.com/dadrus/heimdall affected by CVE-2026-42272?

Go github.com/dadrus/heimdall is affected in <0.17.14.

Is CVE-2026-42272 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

high

CVE-2026-42272

Q: Is CVE-2026-42272 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

Go · github.com/dadrus/heimdall

Summary

Heimdall: Case-sensitive handling of URL-encoded slashes may lead to inconsistent path interpretation

Severity: high
EPSS: 0.4% (p31)
Also known as: GHSA-43jv-5j4x-qv67
Published: 2026-04-25

References

https://github.com/dadrus/heimdall/security/advisories/GHSA-43jv-5j4x-qv67
https://nvd.nist.gov/vuln/detail/CVE-2026-42272
https://github.com/dadrus/heimdall/pull/3207

Related advisories

GHSA-4jgr-pg2m-m988 — high · Go/github.com/dadrus/heimdall
CVE-2026-42274 — high · Go/github.com/dadrus/heimdall
CVE-2026-42273 — high · Go/github.com/dadrus/heimdall
CVE-2026-32811 — medium · Go/github.com/dadrus/heimdall

Is your project exposed to this? Stateward checks every dependency on every pull request and flags it only if your code actually reaches it.

Check my repo

Summarize with AI

ChatGPT Claude Perplexity

Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.