CVE-2026-86426

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Source
https://cve.org/CVERecord?id=CVE-2026-86426
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-86426.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-86426
Aliases
  • GHSA-cvq8-gqfq-3mvg
Published
2026-09-07T12:53:47Z
Modified
2026-09-09T03:48:17Z
Severity
  • 9.2 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
LibreNMS before 26.8.0 Authentication Bypass via API Token Type Confusion
Details

LibreNMS before 26.8.0 contains an authentication bypass vulnerability in the REST API that allows unauthenticated attackers to access protected endpoints by sending numeric values instead of string tokens. Attackers can exploit MySQL type coercion by sending small integers like 0 through 9 to match token hashes, gaining access to API functionality including device credentials and administrative features that enable remote code execution through alert templates.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-287"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86426.json"
}
References

Affected packages

Git / github.com/librenms/librenms

Affected ranges

Type
GIT
Repo
https://github.com/librenms/librenms
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
d2b6e2557b637a606612959e6007150c3726fb43
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "26.8.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ]
}

Affected versions

0.*
0.1
1.*
1.19
1.20
1.21
1.25
1.26
1.27
1.28
1.31.01
1.31.02
1.31.03
1.32
1.33
1.35
1.36
1.37
1.38
1.39
1.40
1.41
1.42
1.42.01
1.43
1.44
1.45
1.46
1.47
1.48
1.48.1
1.49
1.50
1.51
1.52
1.53
1.53.1
1.54
1.55
1.56
1.57
1.58
1.58.1
1.59
1.60
1.61
1.62
1.63
1.64
1.64.1
1.65
1.66
1.67
1.68
1.69
1.70.0
1.70.1
Other
201505
201506
201507
201508
201509
201510
201511
201512
201601
201602
201603
201604
201605
201606
201607
201608
20160828
201609
21.*
21.1.0
21.10.0
21.11.0
21.12.0
21.12.1
21.2.0
21.3.0
21.4.0
21.5.0
21.5.1
21.6.0
21.7.0
21.8.0
21.9.0
22.*
22.1.0
22.10.0
22.11.0
22.12.0
22.2.0
22.2.1
22.3.0
22.4.0
22.5.0
22.6.0
22.7.0
22.8.0
22.9.0
23.*
23.1.0
23.10.0
23.11.0
23.2.0
23.4.0
23.4.1
23.5.0
23.6.0
23.7.0
23.8.0
23.8.1
23.8.2
23.9.0
23.9.1
24.*
24.1.0
24.10.0
24.10.1
24.11.0
24.12.0
24.2.0
24.3.0
24.4.0
24.4.1
24.5.0
24.6.0
24.7.0
24.8.0
24.9.0
24.9.1
25.*
25.1.0
25.10.0
25.11.0
25.12.0
25.2.0
25.3.0
25.4.0
25.5.0
25.6.0
25.7.0
25.8.0
25.9.0
26.*
26.1.0
26.2.0
26.3.0
26.3.1
26.4.0
26.4.1
26.5.0
26.5.1
26.6.0
26.7.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-86426.json"