CVE-2026-45367HAPI FHIR: ReDoS via FHIRPath matches()/replaceMatches() in FHIR Validator HTTP Endpoint
Updated under an hour ago ()
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It affects hapifhir org.hl7.fhir.core. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.68%, higher than 52% of scored CVEs.
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HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior to 6.9.7, the FHIRPathEngine implementation passes user-controlled regular expressions from matches(), matchesFull(), and replaceMatches() to Java regex operations without effective timeouts, allowing catastrophic backtracking and denial of service. This issue is fixed in version 6.9.7.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-1333
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.68% (percentile 52)
- Assigned by
- GitHub_M
- NVD analysis
- Awaiting Analysis
- Record last updated
- Jul 18, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
hapifhir org.hl7.fhir.core hapifhir:org.hl7.fhir.core (from the name) | before 6.9.7 | CNA record |
References
- https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-3653-68v6-rq57x-refsource-confirm
- https://github.com/hapifhir/org.hl7.fhir.core/pull/2403x-refsource-misc
- https://github.com/hapifhir/org.hl7.fhir.core/pull/2463x-refsource-misc
- https://github.com/hapifhir/org.hl7.fhir.core/commit/275d015c680ce9f90cbe285596e50118e472bf24x-refsource-misc
- https://github.com/hapifhir/org.hl7.fhir.core/commit/e08982d2b6f6dcd6c670a762d9cf999179fbe4edx-refsource-misc
- https://github.com/hapifhir/org.hl7.fhir.core/releases/tag/6.9.7x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.