CVE-2026-109357

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Source
https://cve.org/CVERecord?id=CVE-2026-109357
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109357.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-109357
Aliases
  • GHSA-7cmx-65c5-8h8v
Published
2026-10-12T16:05:37Z
Modified
2026-10-13T02:46:58Z
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 26.9.0 LDAP Filter Injection Authentication Bypass via Authorization Header
Details

LibreNMS before 26.9.0 contains an LDAP filter injection in ldap-authorization and ad-authorization modes because usernames are inserted unescaped into LDAP search filters and authentication only checks user existence. When REMOTE_USER is not forwarded, unauthenticated attackers can send a wildcard username via HTTP Basic Authorization (PHP_AUTH_USER) to match all users and groups and gain admin access.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-90"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109357.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
dbe6014c1a0736da12b5f6114d7577c7a9dd136e
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "26.9.0"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

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
26.8.0
26.8.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109357.json"