← Vulnerability feed
Start free
Open in platform
Vulnerability record · CVE-2019-8400 · published 17 February 2019
CVE-2019-8400: Ory hydra cross-site scripting vulnerability
Ory · Hydra
ORY Hydra before v1.0.0-rc.3+oryOS.9 has Reflected XSS via the oauth2/fallbacks/error error_hint parameter.
6.1 CVSS 3.0 Medium EPSS 1.3% · top 30.1% CWE-79 · Cross-site scripting
6.1CVSS 3.0 base score, v2 4.3
1.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References, 4 tagged exploit
17 Jun 2026Last modified by NVD
Description
ORY Hydra before v1.0.0-rc.3+oryOS.9 has Reflected XSS via the oauth2/fallbacks/error error_hint parameter.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Affected products
1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.
References
| Link | Tags |
|---|---|
| https://drive.google.com/file/d/1-25expUYVfK6vsiCmEabUCuelOP7aUDj/view?usp=drivesdk | Release NotesThird Party Advisory |
| https://github.com/ory/hydra/blob/master/CHANGELOG.md#v100-rc3oryos9-2018-12-06 | Release NotesThird Party Advisory |
| https://github.com/ory/hydra/commit/9b5bbd48a72096930af08402c5e07fce7dd770f3 | PatchThird Party Advisory |
| https://hackerone.com/reports/456333 | ExploitIssue TrackingThird Party Advisory |
| https://www.youtube.com/watch?v=RIyZLeKEC8E | ExploitThird Party Advisory |
| https://drive.google.com/file/d/1-25expUYVfK6vsiCmEabUCuelOP7aUDj/view?usp=drivesdk | Release NotesThird Party Advisory |
| https://github.com/ory/hydra/blob/master/CHANGELOG.md#v100-rc3oryos9-2018-12-06 | Release NotesThird Party Advisory |
| https://github.com/ory/hydra/commit/9b5bbd48a72096930af08402c5e07fce7dd770f3 | PatchThird Party Advisory |
| https://hackerone.com/reports/456333 | ExploitIssue TrackingThird Party Advisory |
| https://www.youtube.com/watch?v=RIyZLeKEC8E | ExploitThird Party Advisory |
Track CVE-2019-8400 inside VULONE
Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.
Related vulnerabilities
Same products first, then exploited flaws of the same weakness class.
7.2CVE-2026-33504Ory hydra sql injection vulnerabilityOry Hydra is an OAuth 2.0 Server and OpenID Connect Provider. Prior to version 26.2.0, the listOAuth2Clients, listOAuth2ConsentSessions, and listTrus…EPSS 0.45%5.3CVE-2020-5300Ory hydra authentication bypass by capture-replay vulnerabilityIn Hydra (an OAuth2 Server and OpenID Certified™ OpenID Connect Provider written in Go), before version 1.4.0+oryOS.17, when using client authenticat…EPSS 1.0%6.1CVE-2026-42897Microsoft Exchange Server XSS enables spoofingMicrosoft Exchange Server and Exchange Server Subscription Edition fail to neutralize input during web page generation, a cross-site scripting flaw (…KEVEPSS 0.52%analysed6.1CVE-2025-48700Zimbra Classic UI stored XSS via crafted email HTMLZimbra Collaboration Suite Classic UI fails to properly sanitize HTML content in email messages, allowing crafted tag structures and attribute values…KEVEPSS 1.7%analysed6.1CVE-2025-66376Zimbra Collaboration Classic UI stored XSS via CSS @import in emailZimbra Collaboration Suite 10 before 10.0.18 and 10.1 before 10.1.13 allows stored cross-site scripting in the Classic UI through CSS @import directi…KEVEPSS 20%analysed6.1CVE-2025-68461Roundcube Webmail XSS via SVG animate tagRoundcube Webmail before 1.5.12 and 1.6 before 1.6.12 is vulnerable to cross-site scripting through the animate tag in an SVG document. Because the f…KEVEPSS 27%analysed10.0CVE-2026-22769Dell RecoverPoint for Virtual Machines hardcoded credential flawDell RecoverPoint for Virtual Machines versions prior to 6.0.3.1 HF1 contain a hardcoded credential vulnerability (CWE-798). An unauthenticated remot…KEVEPSS 13%analysed7.1CVE-2025-14611Gladinet CentreStack and Triofox hardcoded AES key enables file inclusionCentreStack and Triofox before 16.12.10420.56791 use hardcoded values in their AES cryptoscheme, weakening protection for publicly exposed endpoints.…KEVEPSS 53%analysed
Source: NIST National Vulnerability Database (record CVE-2019-8400), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.
