Critical
Security advisory
A use-after-free in onig_new_deluxe() in regext.c in Oniguruma 6.9.2 allows attackers to potentially cause information disclosure, denial of service, or possibly code execution by providing a crafted regular expression. The attacker provides a pair of a regex pattern and a string, with a multi-byte encoding that gets handled by onig_new_deluxe(). Oniguruma issues often affect Ruby, as well as common optional libraries for PHP and Rust.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-13224
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:01 UTC · Revision 1
Source evidence
A use-after-free in onig_new_deluxe() in regext.c in Oniguruma 6.9.2 allows attackers to potentially cause information disclosure, denial of service, or possibly code execution by providing a crafted regular expression. The attacker provides a pair of a regex pattern and a string, with a multi-byte encoding that gets handled by onig_new_deluxe(). Oniguruma issues often affect Ruby, as well as common optional libraries for PHP and Rust.
osv:CVE-2019-13224
Complete source record
{
"id": "4e2811f0c491bc1946a93b2bfa9776317b4af24da19a90a7029c09a1c8b1e495",
"url": "https://osv.dev/vulnerability/CVE-2019-13224",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2019-13224",
"summary": "A use-after-free in onig_new_deluxe() in regext.c in Oniguruma 6.9.2 allows attackers to potentially cause information disclosure, denial of service, or possibly code execution by providing a crafted regular expression. The attacker provides a pair of a regex pattern and a string, with a multi-byte encoding that gets handled by onig_new_deluxe(). Oniguruma issues often affect Ruby, as well as common optional libraries for PHP and Rust.",
"evidence": "osv:CVE-2019-13224",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2019-13224",
"aliases": [
"CVE-2019-13224"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/kkos/oniguruma",
"type": "GIT",
"events": [
{
"introduced": "83572e983928243d741f61ac290fc057d69fefc3"
},
{
"last_affected": "83572e983928243d741f61ac290fc057d69fefc3"
},
{
"fixed": "0f7f61ed1b7b697e283e37bd2d731d0bd57adb55"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:oniguruma_project:oniguruma:6.9.2:-:*:*:*:*:*:*",
"range": [
{
"introduced": "6.9.2-NA"
},
{
"last_affected": "6.9.2-NA"
}
],
"source": "CPE_STRING"
},
{
"range": [
{
"fixed": "0f7f61ed1b7b697e283e37bd2d731d0bd57adb55"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"6.9.2-NA",
"v6.9.2_rc3",
"v6.9.2"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-13224.json",
"vanir_signatures": [
{
"id": "CVE-2019-13224-69a60e05",
"digest": {
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"line_hashes": [
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"192845130568107495712244117068883375560",
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"57330471737783644434537330796049609549",
"265399586591815778503620908494229098639",
"17751534671408493758106039438651136950",
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]
},
"source": "https://github.com/kkos/oniguruma/commit/0f7f61ed1b7b697e283e37bd2d731d0bd57adb55",
"target": {
"file": "src/regext.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2019-13224-b47700ae",
"digest": {
"length": 884,
"function_hash": "16716532786252836573114105484968648519"
},
"source": "https://github.com/kkos/oniguruma/commit/0f7f61ed1b7b697e283e37bd2d731d0bd57adb55",
"target": {
"file": "src/regext.c",
"function": "onig_new_deluxe"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-24T14:03:37Z"
}
},
{
"ranges": [
{
"repo": "https://github.com/php/php-src",
"type": "GIT",
"events": [
{
"introduced": "0221e9f827632942225586687a33cfd554860d5e"
},
{
"fixed": "481520d3819b0b68b65539ff59b4bd2f018d6e5f"
},
{
"introduced": "8148cbb78841c8ec0759c0836e7f35dec799d300"
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{
"fixed": "b4140bf64811b97af153a5d49a1d71677993a075"
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{
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},
{
"fixed": "89dc78e0f0c1a4f27b889f232b109a3919ecf478"
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],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "7.1.0"
},
{
"fixed": "7.1.32"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "7.2.0"
},
{
"fixed": "7.2.23"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "7.3.0"
},
{
"fixed": "7.3.9"
}
],
"source": "CPE_RANGE"
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]
}
}
],
"database_specific": {
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}
],
"modified": "2026-10-24T14:03:37.514832962Z",
"provider": "osv",
"references": [
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWCPDTZOIUKGMFAD5NAKUB7FPJFAIQN5/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SNL26OZSQRVLEO6JRNUVIMZTICXBNEQW/",
"https://support.f5.com/csp/article/K00103182?utm_source=f5support&%3Butm_medium=RSS",
"https://lists.debian.org/debian-lts-announce/2019/07/msg00013.html",
"https://security.gentoo.org/glsa/201911-03",
"https://support.f5.com/csp/article/K00103182",
"https://usn.ubuntu.com/4088-1/",
"https://github.com/kkos/oniguruma/commit/0f7f61ed1b7b697e283e37bd2d731d0bd57adb55"
],
"provider_metadata": {
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"cpes": [
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"cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*"
],
"vendor_product": "canonical:ubuntu_linux",
"extracted_events": [
{
"range": [
{
"introduced": "12.04"
},
{
"last_affected": "12.04"
},
{
"introduced": "14.04"
},
{
"last_affected": "14.04"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "8.0"
},
{
"last_affected": "8.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*",
"cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"extracted_events": [
{
"range": [
{
"introduced": "29"
},
{
"last_affected": "29"
},
{
"introduced": "30"
},
{
"last_affected": "30"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2019-13224",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 442831,
"published_at": "2019-07-10T14:15:11.607+00:00"
}