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CVE-2026-90955

MISP CLI Shell Audit Logs Lose User Identity and CLI Marker After First Lazy Model Load

CVSS 4.0 4.6 MEDIUMCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-90955

Published

Affected versions of MISP’s interactive CLI shell do not reliably preserve the identity of the impersonated MISP user across audit logging. The shell is designed to run actions as a supplied MISP user ID. However, the legacy SysLogLogable behavior stored that identity in behavior-instance state that could be overwritten when another model lazily attached the shared behavior. Consequently, subsequent CLI writes could lose the intended user attribution and be logged incorrectly. The commit also notes that CLI-originated records lacked a CLI marker, making them appear similar to ordinary web actions by that user. Version affected: ≤2.5.45

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-90955

Published

MISP

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "modules": [
                        "CLIShell (app/Console/Command/CLIShell)",
                        "SysLogLogableBehavior (app/Plugin/SysLogLogable/Model/Behavior)"
                    ],
                    "product": "MISP",
                    "programFiles": [
                        "app/Console/Command/CLIShell.php",
                        "app/Console/Command/CLIShell/cli_common.php",
                        "app/Console/Command/CLIShell/cli_users.php",
                        "app/Plugin/SysLogLogable/Model/Behavior/SysLogLogableBehavior.php"
                    ],
                    "repo": "https://github.com/MISP/MISP",
                    "vendor": "MISP",
                    "versions": [
                        {
                            "lessThan": "2.5.46",
                            "status": "affected",
                            "version": "0",
                            "versionType": "semver"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON