HighFix available
icu — security advisory
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.
- Products
- icu
- Affected versions
- Not specified
- Fixed versions
- 60.2-r3, 62.1-r1, 64.2-r1, 65.1-r1
- CVEs
- CVE-2020-10531
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 12:00 UTC · Revision 1
Source evidence
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.
osv:ALPINE-CVE-2020-10531
icu
Fixed versions: 64.2-r1
icu
Fixed versions: 64.2-r1
icu
Fixed versions: 65.1-r1
icu
Fixed versions: 65.1-r1
icu
Fixed versions: 65.1-r1
icu
Fixed versions: 65.1-r1
icu
Fixed versions: 65.1-r1
icu
Fixed versions: 65.1-r1
icu
Fixed versions: 65.1-r1
icu
Fixed versions: 65.1-r1
icu
Fixed versions: 65.1-r1
icu
Fixed versions: 65.1-r1
icu
Fixed versions: 65.1-r1
icu
Fixed versions: 65.1-r1
icu
Fixed versions: 65.1-r1
icu
Fixed versions: 60.2-r3
icu
Fixed versions: 62.1-r1
Complete source record
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],
"modified": "2026-10-26T11:17:55.095717453Z",
"provider": "osv",
"upstream": [
"CVE-2020-10531"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2020-10531"
]
},
"related_cves": [
{
"value": "CVE-2020-10531",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 450331,
"published_at": "2020-03-12T19:15:13.227+00:00"
}