Is github.com/ory/hydra affected by CVE-2019-8400?

Go github.com/ory/hydra is affected in >=0.

Is CVE-2019-8400 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 1.3%.

medium

CVE-2019-8400

Go · github.com/ory/hydra

Summary

Hydra has Reflected XSS via error_hint parameter in github.com/ory/hydra

Severity: medium
EPSS: 1.3% (p67)
Also known as: GHSA-7v6r-w4r6-mhch, GO-2026-4861
Published: 2026-03-26

References

https://github.com/advisories/GHSA-7v6r-w4r6-mhch
https://nvd.nist.gov/vuln/detail/CVE-2019-8400
https://github.com/ory/hydra/commit/9b5bbd48a72096930af08402c5e07fce7dd770f3

Related advisories

CVE-2026-33504 — medium · Go/github.com/ory/hydra

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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.