{"id":"CVE-2026-79769","aliases":["BELL-CVE-2026-79769","DEBIAN-CVE-2026-79769","EUVD-2026-65527","GHSA-58vh-2xxg-v7j2","GHSA-g9g8-vgvw-g3vf","UBUNTU-CVE-2026-79769"],"status":"published","title":"Nokogiri before 1.19.4 Invalid Memory Read via initialize_copy_with_args","description":"Nokogiri versions before 1.19.4 contain a possible invalid (out-of-bounds) memory read in the protected internal Node#initialize_copy_with_args helper behind Node#dup and #clone, which unwrapped its source argument as an xmlNode without a type check. If application code calls this protected method with a non-Node argument (e.g., a Namespace), it reads an xmlNs out of bounds, crashing the process. This is only triggerable by a programming error and cannot be triggered by untrusted input or normal use of the public API. Only CRuby is affected. Version 1.19.4 adds a type check and raises TypeError.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00306,"percentile":0.23617,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-843"],"published":"2026-08-25T15:16:02Z","modified":"2026-10-28T02:31:10Z","fixes":[{"ecosystem":"Alpaquita:stream","package":"ruby-nokogiri","fixed_in":["1.19.4-r0"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"ruby-nokogiri","fixed_in":["1.19.4+dfsg-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpaquita:23","package":"ruby-nokogiri","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.13.9-r1"}]}]},{"source":"osv","ecosystem":"Alpaquita:25","package":"ruby-nokogiri","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.18.8-r0"}]}]},{"source":"osv","ecosystem":"Alpaquita:stream","package":"ruby-nokogiri","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.13.9-r1"},{"fixed":"1.19.4-r0"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"ruby-nokogiri","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"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"]},{"source":"osv","ecosystem":"Debian:14","package":"ruby-nokogiri","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.19.4+dfsg-1"}]}],"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"]},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"ruby-nokogiri","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.9-2","1.5.9-3","1.6.0-1","1.6.1+ds-1","1.6.1+ds-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"ruby-nokogiri","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.6.2+ds-2build2","1.6.6.3-1","1.6.7-1","1.6.7.1-1","1.6.7.2-3","1.6.7.2-3build1","1.6.7.2-3ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"ruby-nokogiri","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.0-1","1.8.1-1","1.8.1-1build1","1.8.2-1build1","1.8.2-1ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"ruby-nokogiri","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.3+dfsg1-2","1.10.4+dfsg1-1","1.10.7+dfsg1-1","1.10.7+dfsg1-2","1.10.7+dfsg1-2build1","1.10.7+dfsg1-2ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"ruby-nokogiri","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.11.1+dfsg-2ubuntu1","1.11.7+dfsg-3","1.11.7+dfsg-3build1","1.13.1+dfsg-2","1.13.1+dfsg-2ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"ruby-nokogiri","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.14.3+dfsg-2","1.16.2+dfsg-1","1.16.2+dfsg-1build1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"ruby-nokogiri","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.18.2+dfsg-1build1","1.18.10+dfsg-2","1.18.10+dfsg-3"]}],"products":[{"vendor":"sparklemotion","product":"nokogiri"}],"references":[{"url":"https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-g9g8-vgvw-g3vf","tags":["vendor-advisory","advisory","report"]},{"url":"https://www.vulncheck.com/advisories/nokogiri-before-invalid-memory-read-via-initialize-copy-with-args","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-79769","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-58vh-2xxg-v7j2"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2026-79769","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/79xxx/CVE-2026-79769.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-79769","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-79769","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-79769","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-79769","title":"Nokogiri before 1.19.4 Invalid Memory Read via initialize_copy_with_args","description":"Nokogiri versions before 1.19.4 contain a possible invalid (out-of-bounds) memory read in the protected internal Node#initialize_copy_with_args helper behind Node#dup and #clone, which unwrapped its source argument as an xmlNode without a type check. If application code calls this protected method with a non-Node argument (e.g., a Namespace), it reads an xmlNs out of bounds, crashing the process. This is only triggerable by a programming error and cannot be triggered by untrusted input or normal use of the public API. Only CRuby is affected. Version 1.19.4 adds a type check and raises TypeError.","status":"published","published":"2026-08-25T15:16:02.372Z","modified":"2026-08-26T16:11:11.096Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-843"],"updated_at":"2026-11-02T13:50:38.739766Z"}],"euvd":[{"id":"EUVD-2026-65527","description":"Nokogiri versions before 1.19.4 contain a possible invalid (out-of-bounds) memory read in the protected internal Node#initialize_copy_with_args helper behind Node#dup and #clone, which unwrapped its source argument as an xmlNode without a type check. If application code calls this protected method with a non-Node argument (e.g., a Namespace), it reads an xmlNs out of bounds, crashing the process. This is only triggerable by a programming error and cannot be triggered by untrusted input or normal use of the public API. Only CRuby is affected. Version 1.19.4 adds a type check and raises TypeError.","status":"published","published":"2026-08-25T15:16:02Z","modified":"2026-08-26T16:11:11Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T18:01:30.542287Z"}],"ghsa":[{"id":"GHSA-58vh-2xxg-v7j2","title":"Nokogiri versions before 1.19.4 contain a possible invalid (out-of-bounds) memory read in the...","description":"Nokogiri versions before 1.19.4 contain a possible invalid (out-of-bounds) memory read in the protected internal Node#initialize_copy_with_args helper behind Node#dup and #clone, which unwrapped its source argument as an xmlNode without a type check. If application code calls this protected method with a non-Node argument (e.g., a Namespace), it reads an xmlNs out of bounds, crashing the process. This is only triggerable by a programming error and cannot be triggered by untrusted input or normal use of the public API. Only CRuby is affected. Version 1.19.4 adds a type check and raises TypeError.","status":"published","published":"2026-08-25T18:31:52Z","modified":"2026-08-25T18:31:56Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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","level":"high"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-843"],"updated_at":"2026-11-02T15:10:57.962573Z"}],"nvd":[{"id":"CVE-2026-79769","description":"Nokogiri versions before 1.19.4 contain a possible invalid (out-of-bounds) memory read in the protected internal Node#initialize_copy_with_args helper behind Node#dup and #clone, which unwrapped its source argument as an xmlNode without a type check. If application code calls this protected method with a non-Node argument (e.g., a Namespace), it reads an xmlNs out of bounds, crashing the process. This is only triggerable by a programming error and cannot be triggered by untrusted input or normal use of the public API. Only CRuby is affected. Version 1.19.4 adds a type check and raises TypeError.","status":"published","published":"2026-08-25T16:17:28.32Z","modified":"2026-09-24T20:43:32.537Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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","level":"high","assessor":"secondary"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-843"],"updated_at":"2026-11-02T14:12:41.347728Z"}],"osv":[{"id":"BELL-CVE-2026-79769","status":"published","published":"2026-09-03T06:05:30.264932Z","modified":"2026-09-17T07:15:05.457372684Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:28:26.041478Z"},{"id":"CVE-2026-79769","title":"Nokogiri before 1.19.4 Invalid Memory Read via initialize_copy_with_args","description":"Nokogiri versions before 1.19.4 contain a possible invalid (out-of-bounds) memory read in the protected internal Node#initialize_copy_with_args helper behind Node#dup and #clone, which unwrapped its source argument as an xmlNode without a type check. If application code calls this protected method with a non-Node argument (e.g., a Namespace), it reads an xmlNs out of bounds, crashing the process. This is only triggerable by a programming error and cannot be triggered by untrusted input or normal use of the public API. Only CRuby is affected. Version 1.19.4 adds a type check and raises TypeError.","status":"published","published":"2026-08-25T15:16:02.372Z","modified":"2026-10-28T02:31:10.354760281Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-843"],"updated_at":"2026-11-02T15:45:17.44708Z"},{"id":"DEBIAN-CVE-2026-79769","description":"Nokogiri versions before 1.19.4 contain a possible invalid (out-of-bounds) memory read in the protected internal Node#initialize_copy_with_args helper behind Node#dup and #clone, which unwrapped its source argument as an xmlNode without a type check. If application code calls this protected method with a non-Node argument (e.g., a Namespace), it reads an xmlNs out of bounds, crashing the process. This is only triggerable by a programming error and cannot be triggered by untrusted input or normal use of the public API. Only CRuby is affected. Version 1.19.4 adds a type check and raises TypeError.","status":"published","published":"2026-08-25T16:17:28.32Z","modified":"2026-10-04T15:00:08.357039774Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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","level":"high"}],"updated_at":"2026-11-02T15:46:04.001673Z"},{"id":"UBUNTU-CVE-2026-79769","description":"Nokogiri versions before 1.19.4 contain a possible invalid (out-of-bounds) memory read in the protected internal Node#initialize_copy_with_args helper behind Node#dup and #clone, which unwrapped its source argument as an xmlNode without a type check. If application code calls this protected method with a non-Node argument (e.g., a Namespace), it reads an xmlNs out of bounds, crashing the process. This is only triggerable by a programming error and cannot be triggered by untrusted input or normal use of the public API. Only CRuby is affected. Version 1.19.4 adds a type check and raises TypeError.","status":"published","published":"2026-08-25T16:17:00Z","modified":"2026-09-02T19:36:47.048658878Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"},{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T16:57:18.015985Z"}]}}