{"id":"JLSEC-2026-58","details":"An issue was discovered in International Components for Unicode (ICU) for C/C++ through 66.1. An integer overflow, leading to a heap-based buffer overflow, exists in the UnicodeString::doAppend() function in common/unistr.cpp.","modified":"2026-04-06T14:45:08.988164Z","published":"2026-04-06T14:29:38.996Z","upstream":["CVE-2020-10531"],"database_specific":{"license":"CC-BY-4.0","sources":[{"id":"CVE-2020-10531","modified":"2024-11-21T04:55:31.623Z","published":"2020-03-12T19:15:13.227Z","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-10531","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2020-10531","imported":"2026-04-06T14:18:11.814Z"}]},"references":[{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00004.html"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2020:0738"},{"type":"WEB","url":"https://bugs.chromium.org/p/chromium/issues/detail?id=1044570"},{"type":"WEB","url":"https://chromereleases.googleblog.com/2020/02/stable-channel-update-for-desktop_24.html"},{"type":"WEB","url":"https://chromium.googlesource.com/chromium/deps/icu/+/9f4020916eb1f28f3666f018fdcbe6c9a37f0e08"},{"type":"WEB","url":"https://github.com/unicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afca"},{"type":"WEB","url":"https://github.com/unicode-org/icu/pull/971"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2020/03/msg00024.html"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IOHSO6BUKC6I66J5PZOMAGFVJ66ZS57/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X3B5RWJQD5LA45MYLLR55KZJOJ5NVZGP/"},{"type":"WEB","url":"https://security.gentoo.org/glsa/202003-15"},{"type":"WEB","url":"https://unicode-org.atlassian.net/browse/ICU-20958"},{"type":"WEB","url":"https://usn.ubuntu.com/4305-1/"},{"type":"WEB","url":"https://www.debian.org/security/2020/dsa-4646"},{"type":"WEB","url":"https://www.oracle.com//security-alerts/cpujul2021.html"},{"type":"WEB","url":"https://www.oracle.com/security-alerts/cpuapr2022.html"},{"type":"WEB","url":"https://www.oracle.com/security-alerts/cpujan2021.html"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00004.html"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2020:0738"},{"type":"WEB","url":"https://bugs.chromium.org/p/chromium/issues/detail?id=1044570"},{"type":"WEB","url":"https://chromereleases.googleblog.com/2020/02/stable-channel-update-for-desktop_24.html"},{"type":"WEB","url":"https://chromium.googlesource.com/chromium/deps/icu/+/9f4020916eb1f28f3666f018fdcbe6c9a37f0e08"},{"type":"WEB","url":"https://github.com/unicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afca"},{"type":"WEB","url":"https://github.com/unicode-org/icu/pull/971"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2020/03/msg00024.html"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IOHSO6BUKC6I66J5PZOMAGFVJ66ZS57/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X3B5RWJQD5LA45MYLLR55KZJOJ5NVZGP/"},{"type":"WEB","url":"https://security.gentoo.org/glsa/202003-15"},{"type":"WEB","url":"https://unicode-org.atlassian.net/browse/ICU-20958"},{"type":"WEB","url":"https://usn.ubuntu.com/4305-1/"},{"type":"WEB","url":"https://www.debian.org/security/2020/dsa-4646"},{"type":"WEB","url":"https://www.oracle.com//security-alerts/cpujul2021.html"},{"type":"WEB","url":"https://www.oracle.com/security-alerts/cpuapr2022.html"},{"type":"WEB","url":"https://www.oracle.com/security-alerts/cpujan2021.html"}],"affected":[{"package":{"name":"ICU_jll","ecosystem":"Julia","purl":"pkg:julia/ICU_jll?uuid=a51ab1cf-af8e-5615-a023-bc2c838bba6b"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"67.1.0+3"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-58.json"}}],"schema_version":"1.7.5"}