DEBIAN-CVE-2026-79771

Source
https://security-tracker.debian.org/tracker/CVE-2026-79771
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-79771.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-79771
Upstream
Published
2026-08-25T16:17:28Z
Modified
2026-09-14T17:03:55Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Debian:12 / ruby-nokogiri

Package

Name
ruby-nokogiri
Purl
pkg:deb/debian/ruby-nokogiri?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
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
1.18.2+dfsg-1
1.18.10+dfsg-1
1.18.10+dfsg-2
1.18.10+dfsg-3
1.19.1+dfsg-1
1.19.3+dfsg-1
1.19.4+dfsg-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-79771.json"

Debian:13 / ruby-nokogiri

Package

Name
ruby-nokogiri
Purl
pkg:deb/debian/ruby-nokogiri?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.18.2+dfsg-1
1.18.10+dfsg-1
1.18.10+dfsg-2
1.18.10+dfsg-3
1.19.1+dfsg-1
1.19.3+dfsg-1
1.19.4+dfsg-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-79771.json"

Debian:14 / ruby-nokogiri

Package

Name
ruby-nokogiri
Purl
pkg:deb/debian/ruby-nokogiri?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.19.3+dfsg-1

Affected versions

1.*
1.18.2+dfsg-1
1.18.10+dfsg-1
1.18.10+dfsg-2
1.18.10+dfsg-3
1.19.1+dfsg-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-79771.json"