CVE-2019-8400

high-risk

Published 2019-02-17

ORY Hydra before v1.0.0-rc.3+oryOS.9 has Reflected XSS via the oauth2/fallbacks/error error_hint parameter.

Do I need to act?

0.32% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 6.1/10 Medium

NETWORK / LOW complexity

Hydra

Ory

Release Notes https://drive.google.com/file/d/1-25expUYVfK6vsiCmEabUCuelOP7aUDj/view?usp=drive...

Release Notes https://github.com/ory/hydra/blob/master/CHANGELOG.md#v100-rc3oryos9-2018-12-06

Patch https://github.com/ory/hydra/commit/9b5bbd48a72096930af08402c5e07fce7dd770f3

Exploit https://hackerone.com/reports/456333

Exploit https://www.youtube.com/watch?v=RIyZLeKEC8E

Release Notes https://drive.google.com/file/d/1-25expUYVfK6vsiCmEabUCuelOP7aUDj/view?usp=drive...

Release Notes https://github.com/ory/hydra/blob/master/CHANGELOG.md#v100-rc3oryos9-2018-12-06

Patch https://github.com/ory/hydra/commit/9b5bbd48a72096930af08402c5e07fce7dd770f3

Exploit https://hackerone.com/reports/456333

Exploit https://www.youtube.com/watch?v=RIyZLeKEC8E

/ 100

high-risk

Severity 23/34 · High

Exploitability 1/34 · Minimal

Exposure 32/34 · Critical