CVE-2026-55197

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Source
https://cve.org/CVERecord?id=CVE-2026-55197
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55197.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-55197
Published
2026-06-17T17:59:10.933Z
Modified
2026-07-08T08:13:45.415093394Z
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 - Broken Access Control in /api/session Endpoint
Details

Hermes WebUI before 0.51.443 contains a broken access control vulnerability in the /api/session endpoint that allows authenticated users to disclose cross-profile session transcripts. Attackers can bypass profile boundary checks by directly querying session IDs belonging to other profiles via GET /api/session?session_id=<foreign_id>&messages=1 to retrieve unauthorized conversation transcripts and metadata.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55197.json",
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-639"
    ]
}
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 
{
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.51.443"
        }
    ]
}

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
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v0.50.117
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v0.50.119
v0.50.12
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v0.50.2
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v0.50.3
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v0.50.67
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v0.50.70
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v0.50.8
v0.50.82
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v0.50.9
v0.50.90
v0.50.91
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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
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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
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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
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v0.51.133
v0.51.134
v0.51.135
v0.51.136
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v0.51.140
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v0.51.195
v0.51.196
v0.51.197
v0.51.198
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v0.51.2
v0.51.20
v0.51.200
v0.51.201
v0.51.202
v0.51.203
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v0.51.21
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v0.51.22
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v0.51.99

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55197.json"