CVE-2026-57434
published 2026-06-25CVE-2026-57434: Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri contains a bug when calling certain methods on…
PriorityP338high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.36%
28.2th percentile
Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri contains a bug when calling certain methods on allocated-but-uninitialized native wrapper classes that inherit from Nokogiri::XML::Node. This caused a NULL pointer dereference that could crash the process. This vulnerability is fixed in 1.19.4.
Affected
18 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| 3scale-amp2 | backend-rhel8 | — | — |
| 3scale-amp2 | system-rhel7 | — | — |
| 3scale-amp2 | system-rhel8 | — | — |
| 3scale-amp2 | system-rhel9 | — | — |
| 3scale-amp2 | toolbox-rhel8 | — | — |
| 3scale-amp2 | toolbox-rhel9 | — | — |
| 3scale-amp2 | zync-rhel8 | — | — |
| 3scale-amp2 | zync-rhel9 | — | — |
| 3scale-amp21 | backend | — | — |
| 3scale-amp21 | system | — | — |
| 3scale-amp21 | zync | — | — |
| 3scale-amp22 | backend | — | — |
| 3scale-amp22 | system | — | — |
| 3scale-amp22 | zync | — | — |
| 3scale-amp26 | toolbox | — | — |
| nokogiri | nokogiri | < 1.19.4 | 1.19.4 |
| satellite_el8 | rubygem-nokogiri | — | — |
| sparklemotion | nokogiri | < 1.19.4 | 1.19.4 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv4.01.7LOWCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/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
vendor_redhat7.5HIGH
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-57434 rubygem-nokogiri: Nokogiri: Denial of Service via NULL pointer dereference [fedora-all]
bugzilla·2026-07-06·CVSS 7.5
CVE-2026-57434 [HIGH] CVE-2026-57434 rubygem-nokogiri: Nokogiri: Denial of Service via NULL pointer dereference [fedora-all]
CVE-2026-57434 rubygem-nokogiri: Nokogiri: Denial of Service via NULL pointer dereference [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri contains a bug when calling certain methods on allocated-but-uninitialized native wrapper classes that inherit from Nokogiri::XML::Node. This caused a NULL pointer dereference that could crash the process. This vulnerability is fixed in 1.19.4.
Discussion:
Fixed in 1.19.4 which is already pushed.
Bugzilla
CVE-2026-57434 rubygem-nokogiri: Nokogiri: Denial of Service via NULL pointer dereference [epel-all]
bugzilla·2026-07-06·CVSS 7.5
CVE-2026-57434 [HIGH] CVE-2026-57434 rubygem-nokogiri: Nokogiri: Denial of Service via NULL pointer dereference [epel-all]
CVE-2026-57434 rubygem-nokogiri: Nokogiri: Denial of Service via NULL pointer dereference [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri contains a bug when calling certain methods on allocated-but-uninitialized native wrapper classes that inherit from Nokogiri::XML::Node. This caused a NULL pointer dereference that could crash the process. This vulnerability is fixed in 1.19.4.
Bugzilla
CVE-2026-57434 nokogiri: rubygem-nokogiri: Nokogiri: Denial of Service via NULL pointer dereference
bugzilla·2026-06-25·CVSS 7.5
CVE-2026-57434 [HIGH] CVE-2026-57434 nokogiri: rubygem-nokogiri: Nokogiri: Denial of Service via NULL pointer dereference
CVE-2026-57434 nokogiri: rubygem-nokogiri: Nokogiri: Denial of Service via NULL pointer dereference
Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri contains a bug when calling certain methods on allocated-but-uninitialized native wrapper classes that inherit from Nokogiri::XML::Node. This caused a NULL pointer dereference that could crash the process. This vulnerability is fixed in 1.19.4.
2026-06-25
Published