{"id":"UBUNTU-CVE-2023-26266","details":"In AFL++ 4.05c, the CmpLog component uses the current working directory to resolve and execute unprefixed fuzzing targets, allowing code execution.","modified":"2026-05-20T16:07:35.820084052Z","published":"2023-02-21T04:15:00Z","upstream":["CVE-2023-26266"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-26266"},{"type":"REPORT","url":"https://github.com/AFLplusplus/AFLplusplus/pull/1643"},{"type":"REPORT","url":"https://github.com/AFLplusplus/AFLplusplus/commit/f2be73186e2e16c3992f92b65ae9ba598d6fff2f"},{"type":"REPORT","url":"https://github.com/AFLplusplus/AFLplusplus/commit/673a0a3866783bf28e31d14fbd7a9009c7816ec3"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-26266"}],"affected":[{"package":{"name":"aflplusplus","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/aflplusplus?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.53c-1","2.60c-1","2.60c-1build1","2.60c-1build2"],"ecosystem_specific":{"binaries":[{"binary_name":"afl++","binary_version":"2.60c-1build2"},{"binary_version":"2.60c-1build2","binary_name":"afl++-clang"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-26266.json"}},{"package":{"name":"aflplusplus","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/aflplusplus?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.68c-1build1","3.14c-2ubuntu1","4.00c-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"afl","binary_version":"4.00c-1ubuntu1"},{"binary_version":"4.00c-1ubuntu1","binary_name":"afl++"},{"binary_version":"4.00c-1ubuntu1","binary_name":"afl++-clang"},{"binary_name":"afl-clang","binary_version":"4.00c-1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-26266.json"}},{"package":{"name":"aflplusplus","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/aflplusplus?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.08c-1ubuntu2","4.08c-1ubuntu3","4.09c-1ubuntu1","4.09c-1ubuntu2","4.09c-1ubuntu3"],"ecosystem_specific":{"binaries":[{"binary_version":"4.09c-1ubuntu3","binary_name":"afl++"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-26266.json"}},{"package":{"name":"aflplusplus","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/aflplusplus?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.21c-4ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"afl++","binary_version":"4.21c-4ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-26266.json"}},{"package":{"name":"aflplusplus","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/aflplusplus?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.21c-4ubuntu2","4.33c-1.1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"4.33c-1.1ubuntu1","binary_name":"afl++"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-26266.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}