{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-104657", "assignerOrgId": "f9fea0b6-671e-4eea-8fde-31911902ae05", "state": "PUBLISHED", "assignerShortName": "ProgressSoftware", "dateReserved": "2026-10-02T07:20:03.845Z", "datePublished": "2026-11-06T16:33:21.722Z", "dateUpdated": "2026-11-06T16:33:21.722Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f9fea0b6-671e-4eea-8fde-31911902ae05", "shortName": "ProgressSoftware", "dateUpdated": "2026-11-06T16:33:21.722Z"}, "title": "Missing Integrity Verification in Progress Software Fiddler Download & Setup Skill", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-494", "description": "CWE-494: Download of Code Without Integrity Check", "type": "CWE"}, {"lang": "en", "cweId": "CWE-377", "description": "CWE-377: Insecure Temporary File", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-184", "descriptions": [{"lang": "en", "value": "CAPEC-184: Software Integrity Attack"}]}], "affected": [{"vendor": "Progress Software", "product": "Fiddler Download & Setup Skill", "versions": [{"status": "affected", "version": "0", "lessThan": "8.3.0", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "Missing integrity verification in the Progress Software Fiddler Download and Setup Skill on Linux, macOS, and Windows which allows an attacker to compromise or influence a release component and execute attacker-controlled code when a user runs the skill. On macOS, the skill stages the package at a predictable path and installs it with administrator privileges, which may allow code execution with root privileges after user approval. A local process may also replace the staged macOS package while the skill waits for approval.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Missing integrity verification in the Progress Software Fiddler Download and Setup Skill on Linux, macOS, and Windows which allows an attacker to compromise or influence a release component and execute attacker-controlled code when a user runs the skill. On macOS, the skill stages the package at a predictable path and installs it with administrator privileges, which may allow code execution with root privileges after user approval. A local process may also replace the staged macOS package while the skill waits for approval."}]}], "references": [{"url": "https://www.telerik.com/fiddler/fiddler-everywhere/documentation/knowledge-base/kb-security-missing-download-integrity-verification-cve-2026-104657", "tags": ["vendor-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"}}], "workarounds": [{"lang": "en", "value": "Do not run the affected skill version. Install Fiddler manually from the official distribution source, verify the downloaded artifact's publisher signature and available checksum, and on macOS use a per-user DMG installation without administrator privileges.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Do not run the affected skill version. Install Fiddler manually from the official distribution source, verify the downloaded artifact's publisher signature and available checksum, and on macOS use a per-user DMG installation without administrator privileges."}]}], "credits": [{"lang": "en", "value": "Abhishek Nandkumar Bhaskar (Abhi-Hackz) & komyeonghane320f9", "type": "finder"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 0.2.0"}}}}

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