CriticalFix available
zbar — security advisory
A heap-based buffer overflow exists in the qr_reader_match_centers function of ZBar 0.23.90. Specially crafted QR codes may lead to information disclosure and/or arbitrary code execution. To trigger this vulnerability, an attacker can digitally input the malicious QR code, or prepare it to be physically scanned by the vulnerable scanner.
- Products
- zbar
- Affected versions
- 0.10+doc-10.1build2, 0.10+doc-10build1, 0.10+doc-10build2, 0.10+doc-10ubuntu1, 0.10+doc-9, 0.10+doc-9build1, 0.23-1.1, 0.23-1.2, 0.23-1.3, 0.23.90-1, 0.23.92-4, 0.23.92-4build2, 0.23.93-7, 0.23.93-8, 0.23.93-9ubuntu1, 0.23.93-9ubuntu2
- Fixed versions
- 0.10+doc-10.1ubuntu0.1~esm1, 0.10+doc-10ubuntu1+esm1, 0.23-1.3ubuntu0.1~esm1, 0.23.92-4ubuntu0.1~esm1
- CVEs
- CVE-2023-40889
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:05 UTC · Revision 1
Source evidence
A heap-based buffer overflow exists in the qr_reader_match_centers function of ZBar 0.23.90. Specially crafted QR codes may lead to information disclosure and/or arbitrary code execution. To trigger this vulnerability, an attacker can digitally input the malicious QR code, or prepare it to be physically scanned by the vulnerable scanner.
osv:UBUNTU-CVE-2023-40889
zbar
Fixed versions: Not specified
zbar
Fixed versions: 0.10+doc-10ubuntu1+esm1
zbar
Fixed versions: 0.10+doc-10.1ubuntu0.1~esm1
zbar
Fixed versions: 0.23-1.3ubuntu0.1~esm1
zbar
Fixed versions: 0.23.92-4ubuntu0.1~esm1
zbar
Fixed versions: Not specified
zbar
Fixed versions: Not specified
zbar
Fixed versions: Not specified
Complete source record
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"id": "2960a61f9bdfcba5f6e5f2480e9b7b09cc0399433343b0863d97749077e2769a",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2023-40889",
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],
"modified": "2026-10-17T12:56:25.824345921Z",
"provider": "osv",
"upstream": [
"CVE-2023-40889"
],
"references": [
"https://ubuntu.com/security/CVE-2023-40889",
"https://hackmd.io/@cspl/B1ZkFZv23",
"https://www.cve.org/CVERecord?id=CVE-2023-40889",
"https://ubuntu.com/security/notices/USN-7118-1"
]
},
"related_cves": [
{
"value": "CVE-2023-40889",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 355638,
"published_at": "2023-08-29T17:15:00+00:00"
}