Critical
libxml-bare-perl — security advisory
XML::Bare versions through 0.53 for Perl have an unbounded character lookahead. The parserc_parse function attempts to check for multicharacter strings such as "" without checking that the offsets are within the buffer. Truncated strings such as "
- Products
- libxml-bare-perl
- Affected versions
- 0.53-1build1, 0.53-1build2, 0.53-1build4, 0.53-1build5, 0.53-1build6, 0.53-1build7, 0.53-1build8, 0.53-2build1, 0.53-2build2, 0.53-2build3, 0.53-2build4, 0.53-4build1, 0.53-5, 0.53-5build1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-57074
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:47 UTC · Revision 1
Source evidence
XML::Bare versions through 0.53 for Perl have an unbounded character lookahead. The parserc_parse function attempts to check for multicharacter strings such as "" without checking that the offsets are within the buffer. Truncated strings such as "
osv:UBUNTU-CVE-2026-57074
libxml-bare-perl
Fixed versions: Not specified
libxml-bare-perl
Fixed versions: Not specified
libxml-bare-perl
Fixed versions: Not specified
libxml-bare-perl
Fixed versions: Not specified
libxml-bare-perl
Fixed versions: Not specified
libxml-bare-perl
Fixed versions: Not specified
libxml-bare-perl
Fixed versions: Not specified
Complete source record
{
"id": "fd33a76b80429dad896eae6e114405825bb9be0b4394f06007bbbfecbf8f2553",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-57074",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-57074",
"summary": "XML::Bare versions through 0.53 for Perl have an unbounded character lookahead. The parserc_parse function attempts to check for multicharacter strings such as \"\" without checking that the offsets are within the buffer. Truncated strings such as \"",
"evidence": "osv:UBUNTU-CVE-2026-57074",
"products": [
{
"name": {
"value": "libxml-bare-perl",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.53-1build1",
"evidence": "/affected/0/versions"
},
{
"value": "0.53-1build2",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "libxml-bare-perl",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.53-1build4",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "libxml-bare-perl",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.53-1build5",
"evidence": "/affected/2/versions"
},
{
"value": "0.53-1build6",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "libxml-bare-perl",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.53-1build7",
"evidence": "/affected/3/versions"
},
{
"value": "0.53-1build8",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "libxml-bare-perl",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.53-2build1",
"evidence": "/affected/4/versions"
},
{
"value": "0.53-2build2",
"evidence": "/affected/4/versions"
},
{
"value": "0.53-2build3",
"evidence": "/affected/4/versions"
},
{
"value": "0.53-2build4",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "libxml-bare-perl",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.53-4build1",
"evidence": "/affected/5/versions"
},
{
"value": "0.53-5",
"evidence": "/affected/5/versions"
},
{
"value": "0.53-5build1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "libxml-bare-perl",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.53-4build1",
"evidence": "/affected/6/versions"
}
]
}
],
"severity": "critical",
"structured": {
"id": "UBUNTU-CVE-2026-57074",
"aliases": [
"UBUNTU-CVE-2026-57074"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "libxml-bare-perl",
"purl": "pkg:deb/ubuntu/libxml-bare-perl?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"0.53-1build1",
"0.53-1build2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57074.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libxml-bare-perl",
"binary_version": "0.53-1build2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "libxml-bare-perl",
"purl": "pkg:deb/ubuntu/libxml-bare-perl?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"0.53-1build4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57074.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libxml-bare-perl",
"binary_version": "0.53-1build4"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "libxml-bare-perl",
"purl": "pkg:deb/ubuntu/libxml-bare-perl?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"0.53-1build5",
"0.53-1build6"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57074.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libxml-bare-perl",
"binary_version": "0.53-1build6"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "libxml-bare-perl",
"purl": "pkg:deb/ubuntu/libxml-bare-perl?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"0.53-1build7",
"0.53-1build8"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57074.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libxml-bare-perl",
"binary_version": "0.53-1build8"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "libxml-bare-perl",
"purl": "pkg:deb/ubuntu/libxml-bare-perl?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"0.53-2build1",
"0.53-2build2",
"0.53-2build3",
"0.53-2build4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57074.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libxml-bare-perl",
"binary_version": "0.53-2build4"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "libxml-bare-perl",
"purl": "pkg:deb/ubuntu/libxml-bare-perl?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"0.53-4build1",
"0.53-5",
"0.53-5build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57074.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libxml-bare-perl",
"binary_version": "0.53-5build1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "libxml-bare-perl",
"purl": "pkg:deb/ubuntu/libxml-bare-perl?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"0.53-4build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57074.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libxml-bare-perl",
"binary_version": "0.53-4build1"
}
]
}
}
],
"modified": "2026-10-17T12:59:11.398210783Z",
"provider": "osv",
"upstream": [
"CVE-2026-57074"
],
"references": [
"https://ubuntu.com/security/CVE-2026-57074",
"https://www.cve.org/CVERecord?id=CVE-2026-57074",
"https://lists.security.metacpan.org/cve-announce/msg/41876806/",
"https://github.com/nanoscopic/perl-XML-Bare/pull/1",
"https://security.metacpan.org/patches/X/XML-Bare/0.53/CVE-2026-57074-r1.patch"
]
},
"related_cves": [
{
"value": "CVE-2026-57074",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 359406,
"published_at": "2026-07-16T17:16:00+00:00"
}