6.1

CVE-2019-8400: ory hydra

Modified
AliasesGHSA-7v6r-w4r6-mhchGO-2026-4861
Published 17-02-2019Last modified 04-08-2024

Vulnerability summary

CVE-2019-8400 is a medium (CVSS 6.1) vulnerability in ory hydra. EPSS estimates a 1.33% chance of exploitation in the next 30 days, higher than 71% of scored vulnerabilities. 2 public exploits are recorded.

Priority
Routine

Not severe (CVSS 6.1, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.1/10
010
Medium · v3.0 (NVD)
EPSS score
1.33%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits2reference

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2026:21483-1SUSE-SU-2026:1135-1

Timeline

  1. 17-02-2019
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

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

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.33%

Chance of exploitation in the next 30 days

Percentile

71%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.33% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

2 found
  • referenceUnverified

    Exploit Reference (youtube.com)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (hackerone.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Github.com/ory1 product
  • hydra< 1.4.8 | All versions (No fix recorded)
Ory1 product
  • hydra0.1:beta1 | 0.1:beta2 | 0.1:beta3 | 0.1:beta4 | 0.2.0 | 0.3.0 | 0.3.1 | 0.4.0 | 0.4.1 | 0.4.2 | 0.4.2:alpha | 0.4.2:alpha1 | 0.4.2:alpha2 | 0.4.2:alpha3 | 0.4.2:alpha4 | 0.4.3 | 0.5.0 | 0.5.1 | 0.5.2 | 0.5.3 | 0.5.4 | 0.5.5 | 0.5.6 | 0.5.7 | 0.5.8 | 0.6.0 | 0.6.1 | 0.6.2 | 0.6.3 | 0.6.4 | 0.6.5 | 0.6.6 | 0.6.7 | 0.6.8 | 0.6.9 | 0.6.10 | 0.7.0 | 0.7.1 | 0.7.2 | 0.7.3 | 0.7.4 | 0.7.5 | 0.7.6 | 0.7.7 | 0.7.8 | 0.7.9 | 0.7.10 | 0.7.11 | 0.7.12 | 0.7.13 | 0.8.0 | 0.8.1 | 0.8.2 | 0.8.3 | 0.8.4 | 0.8.5 | 0.8.6 | 0.8.7 | 0.9.0 | 0.9.1 | 0.9.2 | 0.9.3 | 0.9.4 | 0.9.5 | 0.9.6 | 0.9.7 | 0.9.8 | 0.9.9 | 0.9.10 | 0.9.11 | 0.9.12 | 0.9.13 | 0.9.14 | 0.9.15 | 0.9.16 | 0.10.0 | 0.10.0:alpha1 | 0.10.0:alpha10 | 0.10.0:alpha11 | 0.10.0:alpha12 | 0.10.0:alpha13 | 0.10.0:alpha14 | 0.10.0:alpha15 | 0.10.0:alpha16 | 0.10.0:alpha17 | 0.10.0:alpha18 | 0.10.0:alpha19 | 0.10.0:alpha2 | 0.10.0:alpha20 | 0.10.0:alpha21 | 0.10.0:alpha3 | 0.10.0:alpha4 | 0.10.0:alpha5 | 0.10.0:alpha6 | 0.10.0:alpha7 | 0.10.0:alpha8 | 0.10.0:alpha9 | 0.10.1 | 0.10.2 | 0.10.3 | 0.10.4 | 0.10.5 | 0.10.6 | 0.10.7 | 0.10.8 | 0.10.9 | 0.10.10 | 0.11.0 | 0.11.1 | 0.11.2 | 0.11.3 | 0.11.4 | 0.11.6 | 0.11.7 | 0.11.9 | 0.11.10 | 0.11.12 | 0.11.14 | 1.0.0:beta1 | 1.0.0:beta2 | 1.0.0:beta3 | 1.0.0:beta4 | 1.0.0:beta5 | 1.0.0:beta6 | 1.0.0:beta7 | 1.0.0:beta8 | 1.0.0:beta9 | 1.0.0:rc1 | 1.0.0:rc2

2 vendors · 2 products

References

8 links