CVE-2026-55205

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Source
https://cve.org/CVERecord?id=CVE-2026-55205
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55205.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-55205
Published
2026-06-18T15:49:04.786Z
Modified
2026-07-08T08:13:53.228946878Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
Hermes WebUI < 0.51.468 - Resource Exhaustion via Unauthenticated OAuth Flow Endpoint
Details

Hermes WebUI before 0.51.468 contains a resource exhaustion vulnerability in the unauthenticated POST /api/onboarding/oauth/start endpoint that allows unbounded accumulation of in-memory flow state and daemon threads. Attackers can send repeated or concurrent requests to exhaust server memory and thread resources, potentially triggering repeated outbound device-code requests to upstream OAuth providers.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55205.json",
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-770"
    ]
}
References

Affected packages

Git / github.com/nesquena/hermes-webui

Affected ranges

Type
GIT
Repo
https://github.com/nesquena/hermes-webui
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
ce272d9cd5f8e5a4521278f56eb5388010901646
Database specific 
{
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.51.468"
        }
    ]
}

Affected versions

v0.*
v0.12
v0.16
v0.16.1
v0.16.2
v0.17.1
v0.17.2
v0.17.3
v0.18
v0.18.1
v0.19
v0.20
v0.21
v0.22
v0.23
v0.24
v0.25
v0.26
v0.27
v0.28
v0.28.1
v0.29
v0.30
v0.30.1
v0.30.2
v0.30.3
v0.30.4
v0.31
v0.31.1
v0.31.2
v0.32
v0.33
v0.34
v0.34.1
v0.34.2
v0.34.3
v0.35
v0.35.1
v0.36
v0.36.1
v0.36.2
v0.36.3
v0.37.0
v0.38.0
v0.38.1
v0.38.2
v0.38.3
v0.38.4
v0.38.5
v0.38.6
v0.39.0
v0.39.1
v0.40.0
v0.40.1
v0.40.2
v0.41.0
v0.42.0
v0.42.1
v0.42.2
v0.43.0
v0.43.1
v0.44.0
v0.44.1
v0.45.0
v0.46.0
v0.47.0
v0.47.1
v0.48.0
v0.48.1
v0.48.2
v0.49.0
v0.49.1
v0.49.2
v0.49.3
v0.49.4
v0.50.0
v0.50.1
v0.50.10
v0.50.108
v0.50.109
v0.50.11
v0.50.110
v0.50.111
v0.50.112
v0.50.113
v0.50.114
v0.50.115
v0.50.116
v0.50.117
v0.50.118
v0.50.119
v0.50.12
v0.50.120
v0.50.121
v0.50.122
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v0.50.14
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v0.50.159
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v0.50.199
v0.50.2
v0.50.20
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v0.50.202
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v0.50.205
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v0.50.297
v0.50.3
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v0.50.6
v0.50.60
v0.50.61
v0.50.62
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v0.50.64
v0.50.67
v0.50.68
v0.50.69
v0.50.7
v0.50.70
v0.50.71
v0.50.72
v0.50.73
v0.50.74
v0.50.75
v0.50.76
v0.50.8
v0.50.82
v0.50.83
v0.50.84
v0.50.85
v0.50.86
v0.50.87
v0.50.88
v0.50.89
v0.50.9
v0.50.90
v0.50.91
v0.50.92
v0.50.93
v0.50.94
v0.50.95
v0.50.96
v0.51.0
v0.51.1
v0.51.10
v0.51.100
v0.51.101
v0.51.102
v0.51.103
v0.51.104
v0.51.105
v0.51.106
v0.51.107
v0.51.108
v0.51.109
v0.51.11
v0.51.110
v0.51.111
v0.51.112
v0.51.113
v0.51.114
v0.51.115
v0.51.116
v0.51.117
v0.51.118
v0.51.119
v0.51.12
v0.51.120
v0.51.121
v0.51.122
v0.51.123
v0.51.124
v0.51.125
v0.51.126
v0.51.127
v0.51.128
v0.51.129
v0.51.13
v0.51.130
v0.51.131
v0.51.132
v0.51.133
v0.51.134
v0.51.135
v0.51.136
v0.51.137
v0.51.138
v0.51.139
v0.51.14
v0.51.140
v0.51.141
v0.51.142
v0.51.143
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v0.51.18
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v0.51.192
v0.51.193
v0.51.194
v0.51.195
v0.51.196
v0.51.197
v0.51.198
v0.51.199
v0.51.2
v0.51.20
v0.51.200
v0.51.201
v0.51.202
v0.51.203
v0.51.204
v0.51.205
v0.51.206
v0.51.207
v0.51.208
v0.51.209
v0.51.21
v0.51.210
v0.51.211
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v0.51.215
v0.51.216
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v0.51.218
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v0.51.22
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v0.51.222
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v0.51.224
v0.51.225
v0.51.226
v0.51.227
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v0.51.229
v0.51.23
v0.51.230
v0.51.231
v0.51.232
v0.51.233
v0.51.234
v0.51.235
v0.51.236
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v0.51.238
v0.51.239
v0.51.24
v0.51.240
v0.51.241
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v0.51.244
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v0.51.248
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v0.51.254
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v0.51.258
v0.51.259
v0.51.26
v0.51.260
v0.51.261
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v0.51.270
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v0.51.28
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v0.51.3
v0.51.30
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v0.51.4
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v0.51.98
v0.51.99

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55205.json"