CVE-2026-41076

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Source
https://cve.org/CVERecord?id=CVE-2026-41076
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41076.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-41076
Aliases
  • GHSA-3w28-fmcr-mjjx
Downstream
Published
2026-05-22T21:36:21Z
Modified
2026-10-28T02:30:33Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
RT: LDAP authentication bypass via empty password
Details

RT is an open source, enterprise-grade issue and ticket tracking system. Versions 5.0.9 and prior in addition to 6.0.0 through 6.0.2 contain an authentication bypass vulnerability in RT installations that use LDAP/AD for user authentication. Under certain LDAP server configurations, an attacker may be able to authenticate as any LDAP-backed RT user without supplying valid credentials. This issue has been fixed in versions 5.0.10 and 6.0.3. If developers are unable to upgrade immediately, they can temporarily work around this issue by reviewing their LDAP server's authentication policy to ensure it rejects unauthenticated bind attempts. Upgrading RT remains the recommended fix.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-287"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41076.json"
}
References

Affected packages

Git / github.com/bestpractical/rt

Affected ranges

Type
GIT
Repo
https://github.com/bestpractical/rt
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
51f63bbd924b9277ec6d2db49a6d89e8f25da141
Introduced
84623aa0fd0dcc02d1821866d37ac824a902cec8
Fixed
4a8ed900956527a8845f22a7ab011ec3225be91b
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "5.0.10"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "introduced": "6.0.0"
                },
                {
                    "fixed": "6.0.3"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "original_tag": "rt-5.0.10",
            "range": [
                {
                    "fixed": "51f63bbd924b9277ec6d2db49a6d89e8f25da141"
                }
            ],
            "source": "REFERENCES_TAG"
        },
        {
            "original_tag": "rt-6.0.3",
            "range": [
                {
                    "fixed": "4a8ed900956527a8845f22a7ab011ec3225be91b"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

rt-0.*
rt-0.9.10
rt-0.9.11
rt-0.9.12
rt-0.9.13
rt-0.9.14
rt-0.9.15
rt-0.9.16
rt-0.9.17
rt-0.9.18
rt-0.9.19
rt-0.9.20
rt-0.99.1
rt-0.99.2
rt-0.99.3
rt-0.99.4
rt-0.99.4pre1
rt-0.99.5
rt-0.99.5pre1
rt-0.99.6
rt-0.99.6pre1
rt-0.99.6pre4
rt-0.99.6pre5
rt-0.99.6pre6
rt-0.99.7
rt-0.99.8
rt-0.99.8pre1
rt-0.99.8pre2
rt-0.99.8pre3
rt-0.99.8pre4
rt-0.99.8pre5
rt-0.99.8pre8
rt-0.99.8pre9
rt-1.*
rt-1.1.1
rt-1.1.10
rt-1.1.2
rt-1.1.3broken
rt-1.1.4pre
rt-1.1.5
rt-1.1.6
rt-1.1.7
rt-1.1.8
rt-1.1.9
rt-1.1pre.1
rt-1.3.0
rt-1.3.10
rt-1.3.100
rt-1.3.101
rt-1.3.102
rt-1.3.103
rt-1.3.103.private.pretest
rt-1.3.104
rt-1.3.105
rt-1.3.106
rt-1.3.11
rt-1.3.12
rt-1.3.13
rt-1.3.15
rt-1.3.16
rt-1.3.17
rt-1.3.18
rt-1.3.19
rt-1.3.20
rt-1.3.21
rt-1.3.22
rt-1.3.23
rt-1.3.24
rt-1.3.25
rt-1.3.26
rt-1.3.27
rt-1.3.28
rt-1.3.29
rt-1.3.30
rt-1.3.31
rt-1.3.32
rt-1.3.33
rt-1.3.34
rt-1.3.35
rt-1.3.36
rt-1.3.37
rt-1.3.38
rt-1.3.39
rt-1.3.40
rt-1.3.41
rt-1.3.42
rt-1.3.43
rt-1.3.44
rt-1.3.45
rt-1.3.46
rt-1.3.47
rt-1.3.48
rt-1.3.49
rt-1.3.49_01
rt-1.3.50
rt-1.3.51
rt-1.3.52
rt-1.3.53
rt-1.3.54
rt-1.3.55
rt-1.3.56
rt-1.3.57
rt-1.3.58
rt-1.3.59
rt-1.3.6
rt-1.3.60
rt-1.3.61
rt-1.3.62
rt-1.3.63
rt-1.3.64
rt-1.3.65
rt-1.3.66
rt-1.3.67
rt-1.3.68
rt-1.3.68_01
rt-1.3.68_02
rt-1.3.69
rt-1.3.7
rt-1.3.70
rt-1.3.71
rt-1.3.72
rt-1.3.73
rt-1.3.74
rt-1.3.75
rt-1.3.77
rt-1.3.78
rt-1.3.79
rt-1.3.79.test1
rt-1.3.8
rt-1.3.80
rt-1.3.81
rt-1.3.82
rt-1.3.83
rt-1.3.84
rt-1.3.85
rt-1.3.86
rt-1.3.87
rt-1.3.88
rt-1.3.89
rt-1.3.9
rt-1.3.90
rt-1.3.91
rt-1.3.92
rt-1.3.93
rt-1.3.94
rt-1.3.95
rt-1.3.95.test1
rt-1.3.95.test2
rt-1.3.96
rt-1.3.97
rt-1.3.98
rt-1.3.99
rt-1.pre1.2
rt-2.*
rt-2.0.0
rt-2.0.0.rc1
rt-2.0.0.rc2
rt-2.0.0.rc3
rt-2.0.1
rt-2.0.1.test1
rt-2.0.1.test2
rt-2.0.1.test3
rt-2.0.1.test4
rt-2.0.10
rt-2.0.10.test1
rt-2.0.10.test2
rt-2.0.10.test3
rt-2.0.10.test4
rt-2.0.11
rt-2.0.11pre1
rt-2.0.12.pre1
rt-2.0.12.pre2
rt-2.0.12.pre3
rt-2.0.2
rt-2.0.2test1
rt-2.0.2test2
rt-2.0.2test3
rt-2.0.3
rt-2.0.4
rt-2.0.5
rt-2.0.5.test1
rt-2.0.5.test2
rt-2.0.5.test3
rt-2.0.6
rt-2.0.6.pre1
rt-2.0.6.pre3
rt-2.0.6.pre4
rt-2.0.6.pre5
rt-2.0.6.pre6
rt-2.0.6.pre7
rt-2.0.7
rt-2.0.7pre1
rt-2.0.8
rt-2.0.8_01
rt-2.0.8pre1
rt-2.0.8pre2
rt-2.0.8pre3
rt-2.0.9
rt-2.0.9pre1
rt-2.0.9pre3
rt-2.0.9pre4
rt-2.0.9pre5
rt-2.0.9pre6
rt-2.0.9pre7
rt-2.0.9pre8
rt-2.0.9pre9
rt-2.1.1
rt-2.1.10
rt-2.1.11
rt-2.1.12
rt-2.1.13
rt-2.1.14
rt-2.1.15
rt-2.1.16
rt-2.1.17
rt-2.1.18
rt-2.1.19
rt-2.1.20
rt-2.1.21
rt-2.1.22
rt-2.1.23
rt-2.1.24
rt-2.1.25
rt-2.1.26
rt-2.1.27
rt-2.1.28
rt-2.1.29
rt-2.1.3
rt-2.1.30
rt-2.1.31
rt-2.1.32
rt-2.1.33
rt-2.1.34
rt-2.1.35
rt-2.1.36
rt-2.1.37
rt-2.1.38
rt-2.1.39
rt-2.1.4
rt-2.1.41
rt-2.1.42
rt-2.1.43
rt-2.1.44
rt-2.1.45
rt-2.1.46
rt-2.1.47
rt-2.1.48
rt-2.1.49
rt-2.1.5
rt-2.1.50
rt-2.1.51
rt-2.1.52
rt-2.1.53
rt-2.1.54
rt-2.1.55
rt-2.1.56
rt-2.1.57
rt-2.1.58
rt-2.1.59
rt-2.1.6
rt-2.1.60
rt-2.1.61
rt-2.1.62
rt-2.1.63
rt-2.1.64
rt-2.1.66
rt-2.1.67
rt-2.1.68
rt-2.1.69
rt-2.1.7
rt-2.1.70
rt-2.1.71
rt-2.1.72
rt-2.1.73
rt-2.1.74
rt-2.1.75
rt-2.1.76
rt-2.1.77
rt-2.1.78
rt-2.1.79
rt-2.1.8
rt-2.1.80
rt-2.1.81
rt-2.1.82
rt-2.1.83
rt-2.1.84
rt-2.1.85
rt-2.1.86
rt-2.1.87
rt-2.1.87777777
rt-2.1.88
rt-2.1.9
rt-3.*
rt-3.0.0
rt-3.0.0rc0
rt-3.0.0rc1
rt-3.0.0rc2
rt-3.0.0rc3
rt-3.0.0rc4
rt-3.0.1
rt-3.0.1pre1
rt-3.0.1pre2
rt-3.0.2
rt-3.0.2pre1
rt-3.0.2pre2
rt-3.0.2pre3
rt-3.0.2pre4
rt-3.0.2pre5
rt-3.0.2pre6
rt-3.0.3
rt-3.0.3pre1
rt-3.0.3pre2
rt-3.0.3pre3
rt-3.0.3pre4
rt-3.0.3pre5
rt-3.0.3rc1
rt-3.0.3rc2
rt-3.0.3rc3
rt-3.0.3rc4
rt-3.0.4
rt-3.0.4pre1
rt-3.0.4rc1
rt-3.0.4rc2
rt-3.0.5
rt-3.0.5pre1
rt-3.0.5pre2
rt-3.0.5pre3
rt-3.0.5pre4
rt-3.0.5pre5
rt-3.0.5pre6
rt-3.0.5rc1
rt-3.0.6
rt-3.0.6rc1
rt-3.0.7
rt-3.0.7_01
rt-3.0.7pre1
rt-3.0.7pre2
rt-3.0.7pre3
rt-3.0.7rc1
rt-3.0.8
rt-3.0.8pre1
rt-3.0.8pre2
rt-3.0.8rc1
rt-3.1.2
rt-3.3.2
rt-3.3.3
rt-3.3.4
rt-3.5.1
rt-3.5.2
rt-3.5.3
rt-3.5.4
rt-3.5.5
rt-3.7.1
rt-3.7.15
rt-3.7.85
rt-3.7.86
rt-3.8.0rc1
rt-3.8.8rc1
rt-3.9.4
rt-3.9.5
rt-3.9.6
rt-3.9.7
rt-4.*
rt-4.1.13
rt-4.1.17
rt-4.1.19
rt-4.1.23
rt-4.1.5
rt-4.1.6
rt-4.1.7
rt-4.1.8
rt-4.6.0-pre1
rt-5.*
rt-5.0.0alpha1
rt-5.0.0beta1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41076.json"