EUVD-2026-88737
GHSA-p4rx-69jj-g5w2
Severity by source
Sources disagree (Low–High)AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Network-reachable parsing of attacker schemas with low complexity and no auth typical for web-services stacks; impact is availability-only (stack-overflow crash), so C:N/I:N/A:H.
vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.
CVSS VectorVendor: apache
Lifecycle Timeline
3DescriptionCVE.org
Apache XmlSchema doesn't limit how deeply schema imports and includes can be nested, so a malicious schema can make parsing recurse until the stack overflows. This causes a denial of service. Users are recommended to upgrade to version 2.3.3, which fixes this issue.
Articles & Coverage 1
AnalysisAI
Stack overflow denial of service in Apache XmlSchema versions before 2.3.3 allows unauthenticated remote attackers to crash applications that parse attacker-controlled XML schemas by supplying a schema with deeply nested imports or includes. The library lacks a recursion depth limit during schema resolution, so a malicious schema can exhaust the call stack. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires that the host application feed an attacker-controlled XML schema (or a WSDL/XSD that imports/includes attacker-controlled schema documents) into Apache XmlSchema's parser prior to version 2.3.3. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | No CVSS vector, EPSS, KEV, or POC data is provided in the input, so risk must be inferred from the description and product identity. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: Apache XmlSchema 2.3.3 fixes this issue. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
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Same weakness CWE-674 – Uncontrolled Recursion
View allSame technique Denial Of Service
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