{"id":"CVE-2020-4043","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-4043","generatedAt":"2026-10-27T21:19:32.630Z","title":"phpMussel from versions 1.0.0 and less than 1.6.0 has an unserialization vulnerability in PHP's phar wrapper.","description":"phpMussel from versions 1.0.0 and less than 1.6.0 has an unserialization vulnerability in PHP's phar wrapper. Uploading a specially crafted file to an affected version allows arbitrary code execution (discovered, tested, and confirmed by myself), so the risk factor should be regarded as very high. Newer phpMussel versions don't use PHP's phar wrapper, and are therefore unaffected. This has been fixed in version 1.6.0.","published":"2020-06-10T20:15:14.000Z","lastModified":"2026-06-17T03:19:28.000Z","status":"Modified","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-502"],"affected":["phpmussel project/phpmussel"],"epss":{"score":0.02597,"percentile":0.85224,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (2.60%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/phpMussel/phpMussel/commit/97f25973433921c1f953430f32d3081adc4851a4","tags":["Patch","Release Notes","Third Party Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/phpMussel/phpMussel/issues/167","tags":["Patch","Third Party Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/phpMussel/phpMussel/pull/173","tags":["Patch","Third Party Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/phpMussel/phpMussel/security/advisories/GHSA-qr95-4mq5-r3fh","tags":["Mitigation","Third Party Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/phpMussel/phpMussel/security/policy#currently-known-vulnerabilities","tags":["Third Party Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/phpMussel/phpMussel/commit/97f25973433921c1f953430f32d3081adc4851a4","tags":["Patch","Release Notes","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/phpMussel/phpMussel/issues/167","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/phpMussel/phpMussel/pull/173","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/phpMussel/phpMussel/security/advisories/GHSA-qr95-4mq5-r3fh","tags":["Mitigation","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/phpMussel/phpMussel/security/policy#currently-known-vulnerabilities","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-4043","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}