CVE-2026-95667

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-95667", "assignerOrgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "state": "PUBLISHED", "assignerShortName": "CIRCL", "dateReserved": "2026-09-22T13:11:36.849Z", "datePublished": "2026-09-22T13:11:44.277Z", "dateUpdated": "2026-09-22T15:32:43.415Z"}, "containers": {"cna": {"affected": [{"modules": ["Installer scripts (INSTALL/INSTALL.debian12.sh", "INSTALL/INSTALL.debian13.sh", "INSTALL/INSTALL.ubuntu2404.sh", "INSTALL/xINSTALL.rhel94.sh)"], "product": "MISP", "programFiles": ["INSTALL/INSTALL.debian12.sh", "INSTALL/INSTALL.debian13.sh", "INSTALL/INSTALL.ubuntu2404.sh", "INSTALL/xINSTALL.rhel94.sh"], "repo": "https://github.com/MISP/MISP", "vendor": "MISP", "versions": [{"lessThan": "2.5.47", "status": "affected", "version": "0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "reporter", "value": "Niels Teusink of Eye Security"}, {"lang": "en", "type": "remediation developer", "value": "iglocska"}, {"lang": "en", "type": "remediation developer", "value": "Claude Opus 5 (1M context)"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>The MISP installer scripts (for Debian 12, Debian 13, Ubuntu 24.04, and RHEL 9.4) create a log file at /var/log/misp_install.log and a named pipe (FIFO) at /var/log/misp_install.log.pipe to capture all installer output. The log captures highly sensitive data including the generated admin password, database passwords, GPG passphrase, and supervisor password. However, the log file was created by the tee command under the system default umask, resulting in world-readable permissions (typically 0644). Similarly, the FIFO was created with mkfifo without an explicit mode, also inheriting the default umask and remaining world-readable during the window before it was unlinked.&nbsp;</p><p>Any local unprivileged user on the system could read the log file or the FIFO to obtain these credentials.&nbsp;</p><p>Additionally, the log file was not removed before creation, meaning a pre-existing symlink in /var/log could have been used to redirect the write to an arbitrary location.</p><p>Version affected: &lt;2.5.47</p>"}], "value": "The MISP installer scripts (for Debian 12, Debian 13, Ubuntu 24.04, and RHEL 9.4) create a log file at /var/log/misp_install.log and a named pipe (FIFO) at /var/log/misp_install.log.pipe to capture all installer output. The log captures highly sensitive data including the generated admin password, database passwords, GPG passphrase, and supervisor password. However, the log file was created by the tee command under the system default umask, resulting in world-readable permissions (typically 0644). 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The log file is also removed (rm -f) before creation to prevent a pre-existing symlink in /var/log from being used to redirect the write to an attacker-controlled path. This matches the existing 0600 treatment applied to /root/misp_settings.txt by the save_settings() function.</p>"}], "value": "The installer scripts now explicitly create the log file with 0600 permissions using install -m 0600 and the FIFO with mkfifo -m 0600, ensuring both are root-readable/writable only from the moment of creation. The log file is also removed (rm -f) before creation to prevent a pre-existing symlink in /var/log from being used to redirect the write to an attacker-controlled path. This matches the existing 0600 treatment applied to /root/misp_settings.txt by the save_settings() function."}], "title": "MISP Installer Log and FIFO Created World-Readable, Exposing Sensitive Credentials", "x_gcve": [{"extensions": {"bcp-05-x-01": {"ai_annotations": [{"ai_level": "generated", "description": "Draft vulnerability metadata was generated from a git-format patch using an Ollama-hosted language model. 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The log file is also removed (rm -f) before creation to prevent a pre-existing symlink in /var/log from being used to redirect the write to an attacker-controlled path. This matches the existing 0600 treatment applied to /root/misp_settings.txt by the save_settings() function.", "supportingMedia": [{"type": "text/html", "value": "<p>The installer scripts now explicitly create the log file with 0600 permissions using install -m 0600 and the FIFO with mkfifo -m 0600, ensuring both are root-readable/writable only from the moment of creation. The log file is also removed (rm -f) before creation to prevent a pre-existing symlink in /var/log from being used to redirect the write to an attacker-controlled path. This matches the existing 0600 treatment applied to /root/misp_settings.txt by the save_settings() function.</p>", "base64": false}]}], "references": [{"url": "https://github.com/MISP/MISP/commit/d5d72ab38", "name": "Security patch", "tags": ["patch"]}], "descriptions": [{"lang": "en", "value": "The MISP installer scripts (for Debian 12, Debian 13, Ubuntu 24.04, and RHEL 9.4) create a log file at /var/log/misp_install.log and a named pipe (FIFO) at /var/log/misp_install.log.pipe to capture all installer output. The log captures highly sensitive data including the generated admin password, database passwords, GPG passphrase, and supervisor password. However, the log file was created by the tee command under the system default umask, resulting in world-readable permissions (typically 0644). Similarly, the FIFO was created with mkfifo without an explicit mode, also inheriting the default umask and remaining world-readable during the window before it was unlinked.\u00a0\n\nAny local unprivileged user on the system could read the log file or the FIFO to obtain these credentials.\u00a0\n\nAdditionally, the log file was not removed before creation, meaning a pre-existing symlink in /var/log could have been used to redirect the write to an arbitrary location.\n\nVersion affected: <2.5.47", "supportingMedia": [{"type": "text/html", "value": "<p>The MISP installer scripts (for Debian 12, Debian 13, Ubuntu 24.04, and RHEL 9.4) create a log file at /var/log/misp_install.log and a named pipe (FIFO) at /var/log/misp_install.log.pipe to capture all installer output. The log captures highly sensitive data including the generated admin password, database passwords, GPG passphrase, and supervisor password. However, the log file was created by the tee command under the system default umask, resulting in world-readable permissions (typically 0644). Similarly, the FIFO was created with mkfifo without an explicit mode, also inheriting the default umask and remaining world-readable during the window before it was unlinked.&nbsp;</p><p>Any local unprivileged user on the system could read the log file or the FIFO to obtain these credentials.&nbsp;</p><p>Additionally, the log file was not removed before creation, meaning a pre-existing symlink in /var/log could have been used to redirect the write to an arbitrary location.</p><p>Version affected: &lt;2.5.47</p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-732", "description": "CWE-732 Incorrect Permission Assignment for Critical Resource"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-22", "description": "CWE-22 Path Traversal"}]}], "providerMetadata": {"orgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "shortName": "CIRCL", "dateUpdated": "2026-09-22T13:11:44.277Z"}}}, "cveMetadata": {"cveId": "CVE-2026-95667", "state": "PUBLISHED", "dateUpdated": "2026-09-22T15:32:43.415Z", "dateReserved": "2026-09-22T13:11:36.849Z", "assignerOrgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "datePublished": "2026-09-22T13:11:44.277Z", "assignerShortName": "CIRCL"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"modules": ["Installer scripts (INSTALL/INSTALL.debian12.sh", "INSTALL/INSTALL.debian13.sh", "INSTALL/INSTALL.ubuntu2404.sh", "INSTALL/xINSTALL.rhel94.sh)"], "product": "MISP", "programFiles": ["INSTALL/INSTALL.debian12.sh", "INSTALL/INSTALL.debian13.sh", "INSTALL/INSTALL.ubuntu2404.sh", "INSTALL/xINSTALL.rhel94.sh"], "repo": "https://github.com/MISP/MISP", "vendor": "MISP", "versions": [{"lessThan": "2.5.47", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "5a6e4751-2f3f-4070-9419-94fb35b644e8"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The MISP installer scripts (for Debian 12, Debian 13, Ubuntu 24.04, and RHEL 9.4) create a log file at /var/log/misp_install.log and a named pipe (FIFO) at /var/log/misp_install.log.pipe to capture all installer output. The log captures highly sensitive data including the generated admin password, database passwords, GPG passphrase, and supervisor password. However, the log file was created by the tee command under the system default umask, resulting in world-readable permissions (typically 0644). Similarly, the FIFO was created with mkfifo without an explicit mode, also inheriting the default umask and remaining world-readable during the window before it was unlinked.\u00a0\n\nAny local unprivileged user on the system could read the log file or the FIFO to obtain these credentials.\u00a0\n\nAdditionally, the log file was not removed before creation, meaning a pre-existing symlink in /var/log could have been used to redirect the write to an arbitrary location.\n\nVersion affected: <2.5.47"}], "id": "CVE-2026-95667", "lastModified": "2026-09-22T16:18:21.917", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.9, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-95667", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-22T15:32:35.402501Z", "version": "2.0.3"}}]}, "published": "2026-09-22T14:17:21.593", "references": [{"source": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "url": "https://github.com/MISP/MISP/commit/d5d72ab38"}], "sourceIdentifier": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}, {"lang": "en", "value": "CWE-732"}], "source": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,2.5.47)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "MISP", "source": "cna", "vendor": "MISP"}, "product": "misp", "vendor": "misp"}], "created": "2026-09-22T15:45:17.666831+00:00", "updated": "2026-09-22T15:45:17.917670+00:00", "vendors": ["misp", "misp$PRODUCT$misp"]}