DEBIAN-CVE-2026-79771
Nokogiri versions before 1.19.3 contain a memory leak in the XSLT Stylesheet transform method when processing Ruby strings containing null bytes. Attackers can exploit this by passing attacker-controlled input with null bytes to transform parameters, causing heap allocations to leak and enabling denial of service against long-running processes.
DEBIAN-CVE-2026-79771
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-79771
ruby-nokogiri
Source reference: /affected/0/package/name
- Affected versions
- 1.13.10+dfsg-2
Source reference:
/affected/0/versions1.14.2+dfsg-1Source reference:
/affected/0/versions1.14.3+dfsg-1Source reference:
/affected/0/versions1.14.3+dfsg-2Source reference:
/affected/0/versions1.15.4+dfsg-1Source reference:
/affected/0/versions1.16.0+dfsg-1Source reference:
/affected/0/versions1.16.0+dfsg-2Source reference:
/affected/0/versions1.16.2+dfsg-1Source reference:
/affected/0/versions1.16.4+dfsg-1Source reference:
/affected/0/versions1.17.2+dfsg-1~exp1Source reference:
/affected/0/versions1.18.10+dfsg-1Source reference:
/affected/0/versions1.18.10+dfsg-2Source reference:
/affected/0/versions1.18.10+dfsg-3Source reference:
/affected/0/versions1.18.2+dfsg-1Source reference:
/affected/0/versions1.19.1+dfsg-1Source reference:
/affected/0/versions1.19.3+dfsg-1Source reference:
/affected/0/versions1.19.4+dfsg-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
ruby-nokogiri
Source reference: /affected/1/package/name
- Affected versions
- 1.18.10+dfsg-1
Source reference:
/affected/1/versions1.18.10+dfsg-2Source reference:
/affected/1/versions1.18.10+dfsg-3Source reference:
/affected/1/versions1.18.2+dfsg-1Source reference:
/affected/1/versions1.19.1+dfsg-1Source reference:
/affected/1/versions1.19.3+dfsg-1Source reference:
/affected/1/versions1.19.4+dfsg-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
ruby-nokogiri
Source reference: /affected/2/package/name
- Affected versions
- 1.18.10+dfsg-1
Source reference:
/affected/2/versions1.18.10+dfsg-2Source reference:
/affected/2/versions1.18.10+dfsg-3Source reference:
/affected/2/versions1.18.2+dfsg-1Source reference:
/affected/2/versions1.19.1+dfsg-1Source reference:
/affected/2/versions - Fixed versions
- 1.19.3+dfsg-1
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "ruby-nokogiri",
"purl": "pkg:deb/debian/ruby-nokogiri?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1.13.10+dfsg-2",
"1.14.2+dfsg-1",
"1.14.3+dfsg-1",
"1.14.3+dfsg-2",
"1.15.4+dfsg-1",
"1.16.0+dfsg-1",
"1.16.0+dfsg-2",
"1.16.2+dfsg-1",
"1.16.4+dfsg-1",
"1.17.2+dfsg-1~exp1",
"1.18.10+dfsg-1",
"1.18.10+dfsg-2",
"1.18.10+dfsg-3",
"1.18.2+dfsg-1",
"1.19.1+dfsg-1",
"1.19.3+dfsg-1",
"1.19.4+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-79771.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "ruby-nokogiri",
"purl": "pkg:deb/debian/ruby-nokogiri?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.18.10+dfsg-1",
"1.18.10+dfsg-2",
"1.18.10+dfsg-3",
"1.18.2+dfsg-1",
"1.19.1+dfsg-1",
"1.19.3+dfsg-1",
"1.19.4+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-79771.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.19.3+dfsg-1"
}
]
}
],
"package": {
"name": "ruby-nokogiri",
"purl": "pkg:deb/debian/ruby-nokogiri?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.18.10+dfsg-1",
"1.18.10+dfsg-2",
"1.18.10+dfsg-3",
"1.18.2+dfsg-1",
"1.19.1+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-79771.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #58430 · Revision 1
- Added to Heist Feed
- Publisher date