Medium
Security advisory
There's a flaw in openjpeg's t2 encoder in versions prior to 2.4.0. An attacker who is able to provide crafted input to be processed by openjpeg could cause a null pointer dereference. The highest impact of this flaw is to application availability.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-27842
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 06:12 UTC · Revision 1
Source evidence
There's a flaw in openjpeg's t2 encoder in versions prior to 2.4.0. An attacker who is able to provide crafted input to be processed by openjpeg could cause a null pointer dereference. The highest impact of this flaw is to application availability.
osv:CVE-2020-27842
Complete source record
{
"id": "c60799327d8ba8cc4fd130ca84fe00b4b0db9528bddde37828b49c83d1e03808",
"url": "https://osv.dev/vulnerability/CVE-2020-27842",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-27842",
"summary": "There's a flaw in openjpeg's t2 encoder in versions prior to 2.4.0. An attacker who is able to provide crafted input to be processed by openjpeg could cause a null pointer dereference. The highest impact of this flaw is to application availability.",
"evidence": "osv:CVE-2020-27842",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2020-27842",
"aliases": [
"CVE-2020-27842"
],
"metrics": [
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"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/uclouvain/openjpeg",
"type": "GIT",
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},
{
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{
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"versions": [
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"v2.2.0"
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-27842.json"
}
}
],
"modified": "2026-10-24T10:30:36.759940734Z",
"provider": "osv",
"references": [
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJUPGIZE6A4O52EBOF75MCXJOL6MUCRV/",
"https://lists.debian.org/debian-lts-announce/2022/04/msg00006.html",
"https://security.gentoo.org/glsa/202101-29",
"https://www.debian.org/security/2021/dsa-4882",
"https://bugzilla.redhat.com/show_bug.cgi?id=1907513",
"https://www.oracle.com//security-alerts/cpujul2021.html",
"https://www.oracle.com/security-alerts/cpuApr2021.html"
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{
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{
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{
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}
},
"related_cves": [
{
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"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 434061,
"published_at": "2021-01-05T18:15:14.02+00:00"
}