CVE-2026-4224
⚠️ highSummary
When an Expat parser with a registered ElementDeclHandler parses an inline document type definition containing a deeply nested content model a C stack overflow occurs.
CVSS Score
7.5
High
EPSS Score
0.1
Exploit Probability
Published Date
2026-03-16
First Seen: 2026-03-17
📊 Relative Risk Intelligence
This CVE is Moderate Risk - more severe than 68.9% of all 329,456 vulnerabilities in our database.
#102,448
Above average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: Mar 16, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Partial
Limited system impact
🏆 Discovered By
Gil Portnoy (reporter)
Stan Ulbrych (remediation developer)
Bénédikt Tran (remediation reviewer)
Stan Ulbrych (coordinator)
SSVC data provided by
CISA
Last Modified
2026-06-04
Source
NVD 🔗
CVSS Vector 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS Vector 4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/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
CWE IDs (Weakness Types)