Critical
Security advisory
xpointer.c in libxml2 before 2.9.5 (as used in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3, and other products) does not forbid namespace nodes in XPointer ranges, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and memory corruption) via a crafted XML document.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-4658
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:18 UTC · Revision 1
Source evidence
xpointer.c in libxml2 before 2.9.5 (as used in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3, and other products) does not forbid namespace nodes in XPointer ranges, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and memory corruption) via a crafted XML document.
osv:CVE-2016-4658
Complete source record
{
"id": "5bd0d631eb46acef836fa246e7f264b963cc35aa5dd1290d853ff4f1c481b19c",
"url": "https://osv.dev/vulnerability/CVE-2016-4658",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-4658",
"summary": "xpointer.c in libxml2 before 2.9.5 (as used in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3, and other products) does not forbid namespace nodes in XPointer ranges, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and memory corruption) via a crafted XML document.",
"evidence": "osv:CVE-2016-4658",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2016-4658",
"aliases": [
"CVE-2016-4658",
"GHSA-fr52-4hqw-p27f"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/gnome/libxml2",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "2960178fe8f9fe690b7f8c1c49093ff54bb56934"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "2.9.5"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v2.9.5-rc2",
"v2.9.5-rc1",
"v2.9.4",
"CVE-2016-3627",
"CVE-2016-1833",
"CVE-2016-1835",
"CVE-2016-1837",
"CVE-2016-1836",
"CVE-2016-1839",
"CVE-2016-1838",
"CVE-2016-1840",
"CVE-2016-4449",
"CVE-2016-4483",
"CVE-2016-1834",
"CVE-2016-3705",
"v2.9.4-rc2",
"v2.9.4-rc1",
"CVE-2016-1762",
"v2.9.3",
"CVE-2015-8242",
"CVE-2015-7500",
"CVE-2015-7499-2",
"CVE-2015-7499-1",
"CVE-2015-5312",
"CVE-2015-7497",
"CVE-2015-7498",
"CVE-2015-8035",
"CVE-2015-7942-2",
"CVE-2015-7942",
"CVE-2015-8317",
"CVE-2015-1819",
"CVE-2015-7941_2",
"CVE-2015-7941_1",
"v2.9.2",
"CVE-2014-3660",
"v2.9.2-rc2",
"v2.9.2-rc1",
"CVE-2014-0191",
"v2.9.1",
"CVE-2013-2877",
"v2.9.0",
"v2.9.0-rc2",
"v2.8.0",
"v2.8.0-rc2",
"v2.8.0-rc1",
"v2.7.8",
"v2.7.7",
"v2.7.6",
"v2.7.5",
"v2.7.4",
"LIBXML2.7.3",
"LIBXML2.7.2",
"LIBXML2.7.1",
"LIBXML2.7.0",
"LIBXML2.6.32",
"LIBXML2_2_6_28",
"LIBXML2_2_6_27",
"LIBXML2_2_6_26",
"LIBXML2_2_6_24",
"LIBXML2_2_6_23",
"LIBXML2_2_6_22",
"LIBXML2_2_6_21",
"LIBXML2_2_6_20",
"LIBXML2_2_6_19",
"LIBXML2_2_6_18",
"LIBXML2_2_6_16",
"LIBXML2_2_6_15",
"LIBXML2_2_6_14",
"LIBXML2_2_6_13",
"LIBXML2_2_6_12",
"LIBXML2_2_6_11",
"LIBXML_2_6_10",
"LIBXML2_2_6_9",
"LIBXML2_2_6_8",
"LIBXML2_2_6_7",
"LIBXML2_2_6_6",
"LIBXML2_2_6_5",
"LIBXML2_2_6_4",
"LIBXML2_2_6_3",
"LIBXML2_2_6_2",
"LIBXML2_2_6_1",
"LIBXML2_6_0",
"LIBXML2_2_5_x",
"LIBXML2_2_5_10",
"LIBXML2_2_5_9",
"LIBXML2_2_5_8",
"LIBXML2_2_5_7",
"LIBXML_2_5_6",
"LIBXML_2_5_5",
"LIBXML_2_5_4",
"LIBXML_2_5_3",
"LIBXML_2_5_2",
"LIBXML_2_5_1",
"LIBXML2_2_5_0",
"LIBXML_2_4_30",
"LIBXML_2_4_29",
"LIBXML_2_4_27",
"LIBXML_2_4_26",
"LIBXML_2_4_25",
"LIBXML_2_4_24",
"LIBXML_2_4_23",
"LIBXML_2_4_22",
"LIBXML2_2_4_21",
"LIBXML_2_4_20",
"LIBXML_2_4_18",
"LIBXML_2_4_13",
"LIBXML_2_4_16",
"LIBXML_2_4_14",
"LIBXML_2_4_12",
"LIBXML_2_4_11",
"LIBXML_2_4_7",
"LIBXML_2_4_6",
"LIBXML_2_4_4",
"LIBXML_2_4_3",
"LIBXML_2_4_2",
"LIBXML_2_4_0",
"LIBXML_2_3_14",
"LIBXML_2_3_13",
"LIBXML_2_3_12",
"LIBXML_2_3_11",
"LIBXML_2_3_10",
"LIBXML_2_3_9",
"LIBXML_2_3_8",
"help",
"LIBXML_2_3_7",
"LIBXML_2_3_6",
"LIBXML_2_3_5",
"LIBXML_2_3_4",
"LIBXML_2_3_3",
"LIBXML_2_3_2",
"PRE_MUCKUP3",
"PRE_MUCKUP2",
"PRE_MUCKUP",
"LIBXML_2_3_0",
"LIBXML_2_2_8",
"LIBXML_2_2_7",
"LIBXML_2_2_6",
"LIBXML_2_2_4",
"GNOME_PRINT_0_24",
"LIBXML_2_2_3",
"LIBXML_2_2_1",
"LIBXML_2_1_1",
"LIBXML_2_1_0",
"LIB_XML_1_X",
"EAZEL-NAUTILUS-MS-AUG07",
"LIBXML_2_0_0",
"LIBXML_TEST_2_0_0",
"LIBXML_1_8_6",
"LIBXML_1_8_5",
"LIB_XML_1_8_3",
"LIB_XML_1_7_3",
"LIB_XML_1_7_1",
"LIB_XML_1_7_0",
"LIB_XML_1_6_2",
"LIB_XML_1_6_1",
"LIBXML_1_5_0",
"LIB_XML_1_4",
"LIB_XML_1_3",
"LIB_XML_1_1",
"FOR_GNOME_0_99_1",
"LIBXML_0_99",
"GNUMERIC_FIRST_PUBLIC_RELEASE",
"GNOME_0_30"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-4658.json",
"vanir_signatures": [
{
"id": "CVE-2016-4658-19478d5f",
"digest": {
"length": 1117,
"function_hash": "112248867965903609915723946676775857518"
},
"source": "https://github.com/gnome/libxml2/commit/2960178fe8f9fe690b7f8c1c49093ff54bb56934",
"target": {
"file": "testapi.c",
"function": "test_htmlSAXParseDoc"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2016-4658-89b5dc4d",
"digest": {
"length": 767,
"function_hash": "38348634201758905247739532917813109503"
},
"source": "https://github.com/gnome/libxml2/commit/2960178fe8f9fe690b7f8c1c49093ff54bb56934",
"target": {
"file": "testapi.c",
"function": "test_htmlParseDoc"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2016-4658-e5f2af1b",
"digest": {
"threshold": 0.9,
"line_hashes": [
"18510610942270394731172998854272046180",
"272748755794134121945945645792957225480",
"54170169248121335931444949896552358687",
"141089055786028102755735090319227455438",
"61665964622432689858905164713550904594",
"332535206619352013955651071087240089104",
"11231465942016107446610738495321400656",
"215494287859239729874911814193941839532",
"36891550013450279247405052038668386033",
"24991833791440923208649426832086945460",
"139714036997992623004062074565986876498",
"24245789418884720468647596232212633648",
"267295892910826817260149179528614688144",
"179109886395490105780720882533536528140",
"151259951245585662196521411478148296104",
"38537598450160409476045033766076828823",
"47459329859408502495898681105694726249",
"160536182796787516147256792125138784805",
"211353063145894117724334928961077636095",
"49361339725490249555053070855976691417",
"308934692980350398322234333889317410200",
"328098667523760641400254992147984410806",
"67310314071343413901973223584689871330",
"21903990548253296273615755153238058760",
"172558680497795066381628227374527790262",
"24991833791440923208649426832086945460",
"191308631179146184287867750257181619641",
"118370134756265465106062605585184135118"
]
},
"source": "https://github.com/gnome/libxml2/commit/2960178fe8f9fe690b7f8c1c49093ff54bb56934",
"target": {
"file": "testapi.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-24T14:12:07Z"
}
},
{
"ranges": [
{
"repo": "https://gitlab.gnome.org/gnome/libxml2",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "2960178fe8f9fe690b7f8c1c49093ff54bb56934"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "2.9.5"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v2.9.5-rc2",
"v2.9.5-rc1",
"v2.9.4",
"CVE-2016-3627",
"CVE-2016-1833",
"CVE-2016-1835",
"CVE-2016-1837",
"CVE-2016-1836",
"CVE-2016-1839",
"CVE-2016-1838",
"CVE-2016-1840",
"CVE-2016-4449",
"CVE-2016-4483",
"CVE-2016-1834",
"CVE-2016-3705",
"v2.9.4-rc2",
"v2.9.4-rc1",
"CVE-2016-1762",
"v2.9.3",
"CVE-2015-8242",
"CVE-2015-7500",
"CVE-2015-7499-2",
"CVE-2015-7499-1",
"CVE-2015-5312",
"CVE-2015-7497",
"CVE-2015-7498",
"CVE-2015-8035",
"CVE-2015-7942-2",
"CVE-2015-7942",
"CVE-2015-8317",
"CVE-2015-1819",
"CVE-2015-7941_2",
"CVE-2015-7941_1",
"v2.9.2",
"CVE-2014-3660",
"v2.9.2-rc2",
"v2.9.2-rc1",
"CVE-2014-0191",
"v2.9.1",
"CVE-2013-2877",
"v2.9.0",
"v2.9.0-rc2",
"v2.8.0",
"v2.8.0-rc2",
"v2.8.0-rc1",
"v2.7.8",
"v2.7.7",
"v2.7.6",
"v2.7.5",
"v2.7.4",
"LIBXML2.7.3",
"LIBXML2.7.2",
"LIBXML2.7.1",
"LIBXML2.7.0",
"LIBXML2.6.32",
"LIBXML2_2_6_28",
"LIBXML2_2_6_27",
"LIBXML2_2_6_26",
"LIBXML2_2_6_24",
"LIBXML2_2_6_23",
"LIBXML2_2_6_22",
"LIBXML2_2_6_21",
"LIBXML2_2_6_20",
"LIBXML2_2_6_19",
"LIBXML2_2_6_18",
"LIBXML2_2_6_16",
"LIBXML2_2_6_15",
"LIBXML2_2_6_14",
"LIBXML2_2_6_13",
"LIBXML2_2_6_12",
"LIBXML2_2_6_11",
"LIBXML_2_6_10",
"LIBXML2_2_6_9",
"LIBXML2_2_6_8",
"LIBXML2_2_6_7",
"LIBXML2_2_6_6",
"LIBXML2_2_6_5",
"LIBXML2_2_6_4",
"LIBXML2_2_6_3",
"LIBXML2_2_6_2",
"LIBXML2_2_6_1",
"LIBXML2_6_0",
"LIBXML2_2_5_x",
"LIBXML2_2_5_10",
"LIBXML2_2_5_9",
"LIBXML2_2_5_8",
"LIBXML2_2_5_7",
"LIBXML_2_5_6",
"LIBXML_2_5_5",
"LIBXML_2_5_4",
"LIBXML_2_5_3",
"LIBXML_2_5_2",
"LIBXML_2_5_1",
"LIBXML2_2_5_0",
"LIBXML_2_4_30",
"LIBXML_2_4_29",
"LIBXML_2_4_27",
"LIBXML_2_4_26",
"LIBXML_2_4_25",
"LIBXML_2_4_24",
"LIBXML_2_4_23",
"LIBXML_2_4_22",
"LIBXML2_2_4_21",
"LIBXML_2_4_20",
"LIBXML_2_4_18",
"LIBXML_2_4_13",
"LIBXML_2_4_16",
"LIBXML_2_4_14",
"LIBXML_2_4_12",
"LIBXML_2_4_11",
"LIBXML_2_4_7",
"LIBXML_2_4_6",
"LIBXML_2_4_4",
"LIBXML_2_4_3",
"LIBXML_2_4_2",
"LIBXML_2_4_0",
"LIBXML_2_3_14",
"LIBXML_2_3_13",
"LIBXML_2_3_12",
"LIBXML_2_3_11",
"LIBXML_2_3_10",
"LIBXML_2_3_9",
"LIBXML_2_3_8",
"help",
"LIBXML_2_3_7",
"LIBXML_2_3_6",
"LIBXML_2_3_5",
"LIBXML_2_3_4",
"LIBXML_2_3_3",
"LIBXML_2_3_2",
"PRE_MUCKUP3",
"PRE_MUCKUP2",
"PRE_MUCKUP",
"LIBXML_2_3_0",
"LIBXML_2_2_8",
"LIBXML_2_2_7",
"LIBXML_2_2_6",
"LIBXML_2_2_4",
"GNOME_PRINT_0_24",
"LIBXML_2_2_3",
"LIBXML_2_2_1",
"LIBXML_2_1_1",
"LIBXML_2_1_0",
"LIB_XML_1_X",
"EAZEL-NAUTILUS-MS-AUG07",
"LIBXML_2_0_0",
"LIBXML_TEST_2_0_0",
"LIBXML_1_8_6",
"LIBXML_1_8_5",
"LIB_XML_1_8_3",
"LIB_XML_1_7_3",
"LIB_XML_1_7_1",
"LIB_XML_1_7_0",
"LIB_XML_1_6_2",
"LIB_XML_1_6_1",
"LIBXML_1_5_0",
"LIB_XML_1_4",
"LIB_XML_1_3",
"LIB_XML_1_1",
"FOR_GNOME_0_99_1",
"LIBXML_0_99",
"GNUMERIC_FIRST_PUBLIC_RELEASE",
"GNOME_0_30"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-4658.json",
"vanir_signatures": [
{
"id": "CVE-2016-4658-b879f0a4",
"digest": {
"length": 1117,
"function_hash": "112248867965903609915723946676775857518"
},
"source": "https://gitlab.gnome.org/gnome/libxml2@2960178fe8f9fe690b7f8c1c49093ff54bb56934",
"target": {
"file": "testapi.c",
"function": "test_htmlSAXParseDoc"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2016-4658-c3d04011",
"digest": {
"threshold": 0.9,
"line_hashes": [
"18510610942270394731172998854272046180",
"272748755794134121945945645792957225480",
"54170169248121335931444949896552358687",
"141089055786028102755735090319227455438",
"61665964622432689858905164713550904594",
"332535206619352013955651071087240089104",
"11231465942016107446610738495321400656",
"215494287859239729874911814193941839532",
"36891550013450279247405052038668386033",
"24991833791440923208649426832086945460",
"139714036997992623004062074565986876498",
"24245789418884720468647596232212633648",
"267295892910826817260149179528614688144",
"179109886395490105780720882533536528140",
"151259951245585662196521411478148296104",
"38537598450160409476045033766076828823",
"47459329859408502495898681105694726249",
"160536182796787516147256792125138784805",
"211353063145894117724334928961077636095",
"49361339725490249555053070855976691417",
"308934692980350398322234333889317410200",
"328098667523760641400254992147984410806",
"67310314071343413901973223584689871330",
"21903990548253296273615755153238058760",
"172558680497795066381628227374527790262",
"24991833791440923208649426832086945460",
"191308631179146184287867750257181619641",
"118370134756265465106062605585184135118"
]
},
"source": "https://gitlab.gnome.org/gnome/libxml2@2960178fe8f9fe690b7f8c1c49093ff54bb56934",
"target": {
"file": "testapi.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2016-4658-f06e3442",
"digest": {
"length": 767,
"function_hash": "38348634201758905247739532917813109503"
},
"source": "https://gitlab.gnome.org/gnome/libxml2@2960178fe8f9fe690b7f8c1c49093ff54bb56934",
"target": {
"file": "testapi.c",
"function": "test_htmlParseDoc"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-24T14:12:07Z"
}
}
],
"modified": "2026-10-24T14:12:07.411797421Z",
"provider": "osv",
"references": [
"https://cert-portal.siemens.com/productcert/html/ssa-398330.html",
"https://security.gentoo.org/glsa/201701-37",
"https://support.apple.com/HT207141",
"https://support.apple.com/HT207142",
"https://support.apple.com/HT207143",
"https://support.apple.com/HT207170",
"https://git.gnome.org/browse/libxml2/commit/?id=c1d1f7121194036608bf555f08d3062a36fd344b"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*"
],
"vendor_product": "apple:iphone_os",
"extracted_events": [
{
"range": [
{
"fixed": "10.0"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*"
],
"vendor_product": "apple:mac_os_x",
"extracted_events": [
{
"range": [
{
"fixed": "10.12"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*"
],
"vendor_product": "apple:tvos",
"extracted_events": [
{
"range": [
{
"fixed": "10.0"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*"
],
"vendor_product": "apple:watchos",
"extracted_events": [
{
"range": [
{
"fixed": "3.0"
}
],
"source": "CPE_RANGE"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2016-4658",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 443325,
"published_at": "2016-09-25T10:59:02.343+00:00"
}