CVE-2019-13224

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-24. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 4%CVSS: 9.8Exploit: None knownExposed: 0

A fix is available — apply it.

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.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
50(Track)
EG Risk 50/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation4% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
4%
EPSS %ILE
90%
KEV
Not listed

Published

July 10, 2019

Last Modified

November 21, 2024

Advisory Details (7)

Auto-updated Aug 16, 2026
Patch available. Sources: github_commit.
generic Patch Available

[SECURITY] [DLA 1854-1] libonig security update

https://lists.debian.org/debian-lts-announce/2019/07/msg00013.html
github_commit Patch Available

commit 0f7f61ed1b7b (kkos/oniguruma)

Patch available: kkos/oniguruma v6.9.3 (contains commit 0f7f61ed1b7b)

https://github.com/kkos/oniguruma/commit/0f7f61ed1b7b697e283e37bd2d731d0bd57adb55
generic

myF5

https://support.f5.com/csp/article/K00103182?utm_source=f5support&amp%3Butm_medium=RSS
generic

myF5

https://support.f5.com/csp/article/K00103182
generic

Oniguruma: Multiple vulnerabilities (GLSA 201911-03) — Gentoo security

https://security.gentoo.org/glsa/201911-03
generic

[SECURITY] Fedora 30 Update: oniguruma-6.9.2-2.fc30 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SNL26OZSQRVLEO6JRNUVIMZTICXBNEQW/
generic

[SECURITY] Fedora 29 Update: oniguruma-6.9.1-2.fc29 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWCPDTZOIUKGMFAD5NAKUB7FPJFAIQN5/

Vendor Advisories for CVE-2019-13224(4)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibphp5-embed (5.5.9+dfsg-1ubuntu4.29+esm4) @ trusty2026-05-27ubuntu
redhatoniguruma-0:6.8.2-2.1.el8_92024-02-20redhat
redhatoniguruma-0:6.8.2-2.1.el8_82024-01-30redhat
redhatoniguruma-0:6.8.2-2.1.el8_62024-01-25redhat
redhatphp:7.3-8020020200715124551.ceb1cf902020-09-08redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(8 across 7 ecosystems)
Debian:9(2)
PackageVulnerable rangeFixed inDependents
libonig6.1.3-26.1.3-2+deb9u1—
php7.07.0.19-1 ... 7.0.33-0+deb9u3 (20 versions)7.0.33-0+deb9u5—
Debian:10(1)
PackageVulnerable rangeFixed inDependents
php7.37.3.4-2, 7.3.6-1, 7.3.8-17.3.9-1~deb10u1—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libonig—6.9.2-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libonig—6.9.2-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libonig—6.9.2-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libonig—6.9.2-1—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
libonig5.9.5-3.2, 5.9.5-3.2+deb8u15.9.5-3.2+deb8u2—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 7× in last 7d / 29× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 121 total refreshes for this CVE.

  1. 2026-08-20 22:51 UTCEPSS rescore
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  3. 2026-07-23 01:39 UTCEG score recompute
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Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2019-13224?
CVE-2019-13224 is a critical vulnerability published on July 10, 2019. A use-after-free in onignewdeluxe() 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…
When was CVE-2019-13224 disclosed?
CVE-2019-13224 was first published in the National Vulnerability Database on July 10, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-13224 actively exploited?
CVE-2019-13224 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4% probability of exploitation in the next 30 days, which ranks it in the top 10.2% of all scored CVEs.
What is the CVSS score of CVE-2019-13224?
CVE-2019-13224 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2019-13224?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-13224, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2019-13224

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