CVE-2026-55198

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Source
https://cve.org/CVERecord?id=CVE-2026-55198
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55198.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-55198
Published
2026-06-17T17:59:25.491Z
Modified
2026-07-08T08:13:45.391017801Z
Severity
  • 7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Hermes WebUI < 0.51.443 - Cross-Profile Session Data Exfiltration via Session Export Endpoint
Details

Hermes WebUI before 0.51.443 contains an authorization bypass vulnerability in the session export endpoint that allows authenticated users to access sessions from other profiles. The handlesession_export handler in api/routes.py fails to verify active-profile ownership before serializing session data, enabling attackers to exfiltrate foreign session transcripts by guessing or knowing session identifiers.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55198.json",
    "cwe_ids": [
        "CWE-639"
    ],
    "cna_assigner": "VulnCheck"
}
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
2a3baa71b81ca92da8ece8616a09f15894beec71
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.51.443"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION",
        "REFERENCES"
    ]
}

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
v0.50.123
v0.50.124
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v0.50.126
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v0.50.13
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v0.50.132
v0.50.133
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v0.50.14
v0.50.140
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v0.50.159
v0.50.16
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v0.50.18
v0.50.180
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v0.50.183
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v0.50.185
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v0.50.196
v0.50.197
v0.50.198
v0.50.199
v0.50.2
v0.50.20
v0.50.200
v0.50.202
v0.50.203
v0.50.204
v0.50.205
v0.50.206
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v0.50.28
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v0.50.29
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v0.50.296
v0.50.297
v0.50.3
v0.50.30
v0.50.31
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v0.50.34
v0.50.35
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v0.50.4
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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
v0.51.144
v0.51.145
v0.51.146
v0.51.147
v0.51.148
v0.51.149
v0.51.15
v0.51.150
v0.51.151
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v0.51.156
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v0.51.16
v0.51.160
v0.51.161
v0.51.162
v0.51.163
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v0.51.165
v0.51.166
v0.51.167
v0.51.168
v0.51.169
v0.51.17
v0.51.170
v0.51.171
v0.51.172
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v0.51.174
v0.51.175
v0.51.176
v0.51.177
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v0.51.18
v0.51.180
v0.51.181
v0.51.182
v0.51.183
v0.51.184
v0.51.185
v0.51.186
v0.51.187
v0.51.188
v0.51.189
v0.51.19
v0.51.190
v0.51.191
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
v0.51.212
v0.51.213
v0.51.214
v0.51.215
v0.51.216
v0.51.217
v0.51.218
v0.51.219
v0.51.22
v0.51.220
v0.51.221
v0.51.222
v0.51.223
v0.51.224
v0.51.225
v0.51.226
v0.51.227
v0.51.228
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
v0.51.237
v0.51.238
v0.51.239
v0.51.24
v0.51.240
v0.51.241
v0.51.242
v0.51.243
v0.51.244
v0.51.245
v0.51.246
v0.51.247
v0.51.248
v0.51.249
v0.51.25
v0.51.250
v0.51.251
v0.51.252
v0.51.253
v0.51.254
v0.51.255
v0.51.256
v0.51.257
v0.51.258
v0.51.259
v0.51.26
v0.51.260
v0.51.261
v0.51.262
v0.51.263
v0.51.264
v0.51.265
v0.51.266
v0.51.267
v0.51.268
v0.51.269
v0.51.27
v0.51.270
v0.51.271
v0.51.272
v0.51.273
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v0.51.275
v0.51.276
v0.51.277
v0.51.278
v0.51.279
v0.51.28
v0.51.280
v0.51.281
v0.51.282
v0.51.283
v0.51.284
v0.51.285
v0.51.286
v0.51.287
v0.51.288
v0.51.289
v0.51.29
v0.51.290
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v0.51.293
v0.51.294
v0.51.295
v0.51.296
v0.51.297
v0.51.298
v0.51.299
v0.51.3
v0.51.30
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v0.51.38
v0.51.380
v0.51.381
v0.51.382
v0.51.383
v0.51.384
v0.51.385
v0.51.386
v0.51.387
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v0.51.389
v0.51.39
v0.51.390
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v0.51.392
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v0.51.394
v0.51.395
v0.51.396
v0.51.397
v0.51.398
v0.51.399
v0.51.4
v0.51.40
v0.51.400
v0.51.403
v0.51.404
v0.51.405
v0.51.406
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v0.51.410
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v0.51.99

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55198.json"