CVE-2026-34939

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Source
https://cve.org/CVERecord?id=CVE-2026-34939
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34939.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-34939
Aliases
Published
2026-04-03T22:52:32.763Z
Modified
2026-08-07T11:50:46.027435105Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
PraisonAI: ReDoS via Unvalidated User-Controlled Regex in MCPToolIndex.search_tools()
Details

PraisonAI is a multi-agent teams system. Prior to version 4.5.90, MCPToolIndex.search_tools() compiles a caller-supplied string directly as a Python regular expression with no validation, sanitization, or timeout. A crafted regex causes catastrophic backtracking in the re engine, blocking the Python thread for hundreds of seconds and causing a complete service outage. This issue has been patched in version 4.5.90.

Database specific 
{
    "cwe_ids": [
        "CWE-1333"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34939.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/mervinpraison/praisonai

Affected ranges

Type
GIT
Repo
https://github.com/mervinpraison/praisonai
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
79cda2604b3daa78802fb6884f281ba5b7f44538
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:praison:praisonai:*:*:*:*:*:*:*:*",
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "4.5.90"
        }
    ]
}

Affected versions

0.*
0.0.55
0.0.56
0.0.57
0.0.59rc5
2.*
2.0.25
2.0.26
2.0.27
2.0.28
2.0.29
2.0.30
2.0.31
2.0.32
2.0.33
2.0.34
2.0.35
2.0.36
2.0.37
2.0.38
2.0.39
2.0.40
2.0.41
2.0.42
2.0.43
2.0.44
2.0.45
2.0.46
2.0.47
2.0.48
2.0.49
2.0.50
2.0.51
2.0.53
2.0.54
2.0.55
2.0.56
2.0.57
2.0.58
2.0.59
2.0.60
2.0.61
2.0.62
2.0.63
2.0.64
2.0.65
2.0.66
2.0.67
2.0.68
2.0.69
2.0.70
2.0.71
2.0.72
2.0.73
2.0.74
2.0.75
2.0.76
praisonai-cli@0.*
praisonai-cli@0.2.0
praisonai-derive@0.*
praisonai-derive@0.2.0
praisonai@0.*
praisonai@0.2.0
v0.*
v0.0.1
v0.0.18
v0.0.20
v0.0.21
v0.0.22
v0.0.23
v0.0.24
v0.0.25
v0.0.26
v0.0.27
v0.0.28
v0.0.29
v0.0.30
v0.0.31
v0.0.32
v0.0.33
v0.0.34
v0.0.35
v0.0.36
v0.0.37
v0.0.38
v0.0.39
v0.0.40
v0.0.41
v0.0.42
v0.0.43
v0.0.44
v0.0.45
v0.0.46
v0.0.47
v0.0.48
v0.0.49
v0.0.50
v0.0.51
v0.0.52
v0.0.53
v0.0.54
v0.0.58
v0.0.59
v0.0.59rc1
v0.0.59rc11
v0.0.59rc2
v0.0.59rc3
v0.0.59rc4
v0.0.59rc5
v0.0.59rc6
v0.0.59rc7
v0.0.59rc8
v0.0.59rc9
v0.0.61
v0.0.62
v0.0.63
v0.0.64
v0.0.65
v0.0.66
v0.0.67
v0.0.68
v0.0.69
v0.0.70
v0.0.71
v0.0.72
v0.0.73
v0.0.74
v0.1.0
v0.1.1
v0.1.10
v0.1.2
v0.1.3
v0.1.4
v0.1.5
v0.1.6
v0.1.7
v0.1.8
v0.1.9
v0.2.0
v1.*
v1.0.0
v1.0.1
v1.0.10
v1.0.11
v1.0.2
v1.0.3
v1.0.4
v1.0.5
v1.0.6
v1.0.8
v1.0.9
v2.*
v2.0.0
v2.0.1
v2.0.10
v2.0.13
v2.0.14
v2.0.15
v2.0.16
v2.0.17
v2.0.18
v2.0.19
v2.0.20
v2.0.21
v2.0.22
v2.0.23
v2.0.24
v2.0.4
v2.0.5
v2.0.6
v2.0.7
v2.0.77
v2.0.78
v2.0.79
v2.0.8
v2.0.80
v2.0.81
v2.0.9
v2.1.0
v2.1.1
v2.1.2
v2.1.3
v2.1.4
v2.1.5
v2.1.6
v2.2.0
v2.2.1
v2.2.10
v2.2.11
v2.2.12
v2.2.13
v2.2.14
v2.2.15
v2.2.16
v2.2.17
v2.2.18
v2.2.19
v2.2.2
v2.2.20
v2.2.21
v2.2.22
v2.2.23
v2.2.24
v2.2.25
v2.2.26
v2.2.27
v2.2.28
v2.2.29
v2.2.3
v2.2.30
v2.2.31
v2.2.32
v2.2.33
v2.2.34
v2.2.35
v2.2.36
v2.2.37
v2.2.38
v2.2.39
v2.2.4
v2.2.40
v2.2.41
v2.2.42
v2.2.43
v2.2.44
v2.2.45
v2.2.46
v2.2.47
v2.2.48
v2.2.49
v2.2.5
v2.2.50
v2.2.51
v2.2.52
v2.2.53
v2.2.54
v2.2.55
v2.2.56
v2.2.57
v2.2.58
v2.2.59
v2.2.6
v2.2.60
v2.2.61
v2.2.62
v2.2.63
v2.2.64
v2.2.65
v2.2.66
v2.2.67
v2.2.68
v2.2.69
v2.2.7
v2.2.70
v2.2.71
v2.2.72
v2.2.73
v2.2.74
v2.2.75
v2.2.76
v2.2.77
v2.2.78
v2.2.79
v2.2.8
v2.2.80
v2.2.81
v2.2.82
v2.2.83
v2.2.84
v2.2.85
v2.2.86
v2.2.87
v2.2.89
v2.2.9
v2.2.90
v2.2.91
v2.2.93
v2.2.96
v2.2.97
v2.2.98
v2.2.99
v2.3.0
v2.3.1
v2.3.10
v2.3.11
v2.3.12
v2.3.13
v2.3.14
v2.3.15
v2.3.16
v2.3.18
v2.3.19
v2.3.2
v2.3.20
v2.3.21
v2.3.22
v2.3.23
v2.3.24
v2.3.25
v2.3.26
v2.3.27
v2.3.28
v2.3.29
v2.3.3
v2.3.30
v2.3.31
v2.3.32
v2.3.33
v2.3.34
v2.3.35
v2.3.36
v2.3.37
v2.3.38
v2.3.39
v2.3.4
v2.3.40
v2.3.41
v2.3.42
v2.3.43
v2.3.44
v2.3.45
v2.3.46
v2.3.47
v2.3.48
v2.3.49
v2.3.5
v2.3.50
v2.3.51
v2.3.52
v2.3.53
v2.3.54
v2.3.55
v2.3.56
v2.3.57
v2.3.58
v2.3.59
v2.3.6
v2.3.60
v2.3.61
v2.3.62
v2.3.63
v2.3.64
v2.3.65
v2.3.66
v2.3.67
v2.3.68
v2.3.69
v2.3.7
v2.3.70
v2.3.71
v2.3.72
v2.3.73
v2.3.74
v2.3.75
v2.3.76
v2.3.77
v2.3.78
v2.3.79
v2.3.8
v2.3.80
v2.3.81
v2.3.82
v2.3.83
v2.3.84
v2.3.85
v2.3.86
v2.3.87
v2.3.9
v2.4.0
v2.4.1
v2.4.2
v2.4.3
v2.4.4
v2.5.0
v2.5.2
v2.5.3
v2.5.4
v2.5.5
v2.5.6
v2.5.7
v2.6.0
v2.6.1
v2.6.2
v2.6.3
v2.6.4
v2.6.5
v2.6.6
v2.6.7
v2.6.8
v2.7.0
v2.7.1
v2.7.2
v2.7.3
v2.7.4
v2.7.5
v2.7.6
v2.7.7
v2.7.8
v2.7.9
v2.8.0
v4.*
v4.4.10
v4.4.11
v4.4.12
v4.4.5
v4.4.6
v4.4.7
v4.4.8
v4.4.9
v4.5.0
v4.5.1
v4.5.10
v4.5.11
v4.5.12
v4.5.13
v4.5.14
v4.5.15
v4.5.16
v4.5.17
v4.5.18
v4.5.19
v4.5.2
v4.5.20
v4.5.21
v4.5.22
v4.5.23
v4.5.24
v4.5.25
v4.5.26
v4.5.27
v4.5.28
v4.5.29
v4.5.3
v4.5.30
v4.5.31
v4.5.32
v4.5.33
v4.5.34
v4.5.35
v4.5.36
v4.5.37
v4.5.38
v4.5.39
v4.5.40
v4.5.41
v4.5.42
v4.5.43
v4.5.44
v4.5.45
v4.5.46
v4.5.48
v4.5.49
v4.5.5
v4.5.51
v4.5.52
v4.5.54
v4.5.55
v4.5.56
v4.5.57
v4.5.58
v4.5.59
v4.5.6
v4.5.60
v4.5.62
v4.5.63
v4.5.64
v4.5.65
v4.5.67
v4.5.68
v4.5.69
v4.5.7
v4.5.70
v4.5.71
v4.5.72
v4.5.73
v4.5.74
v4.5.76
v4.5.77
v4.5.78
v4.5.79
v4.5.8
v4.5.80
v4.5.81
v4.5.82
v4.5.83
v4.5.85
v4.5.87
v4.5.88
v4.5.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34939.json"