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CVE-2026-45367
HAPI FHIR: ReDoS via FHIRPath matches()/replaceMatches() in FHIR Validator HTTP Endpoint
High7.5EPSS 0.68%
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Awaiting Analysis | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.68% · top 47% of all CVEs (5 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
- affected < 6.9.7
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenca.uhn.hapi.fhir:org.hl7.fhir.dstu2GHSA-3653-68v6-rq57 (opens in a new tab)
- Mavenca.uhn.hapi.fhir:org.hl7.fhir.dstu2016mayGHSA-3653-68v6-rq57 (opens in a new tab)
- Mavenca.uhn.hapi.fhir:org.hl7.fhir.dstu3GHSA-3653-68v6-rq57 (opens in a new tab)
- Mavenca.uhn.hapi.fhir:org.hl7.fhir.r4GHSA-3653-68v6-rq57 (opens in a new tab)
- Mavenca.uhn.hapi.fhir:org.hl7.fhir.r4bGHSA-3653-68v6-rq57 (opens in a new tab)
- Mavenca.uhn.hapi.fhir:org.hl7.fhir.r5GHSA-3653-68v6-rq57 (opens in a new tab)
- Mavenca.uhn.hapi.fhir:org.hl7.fhir.validationGHSA-3653-68v6-rq57 (opens in a new tab)
- Mavenca.uhn.hapi.fhir:org.hl7.fhir.validation.cliGHSA-3653-68v6-rq57 (opens in a new tab)
References (6)
- https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-3653-68v6-rq57 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/hapifhir/org.hl7.fhir.core/pull/2403 (opens in a new tab)x_refsource_MISC
- https://github.com/hapifhir/org.hl7.fhir.core/pull/2463 (opens in a new tab)x_refsource_MISC
- https://github.com/hapifhir/org.hl7.fhir.core/commit/275d015c680ce9f90cbe285596e50118e472bf24 (opens in a new tab)x_refsource_MISC
- https://github.com/hapifhir/org.hl7.fhir.core/commit/e08982d2b6f6dcd6c670a762d9cf999179fbe4ed (opens in a new tab)x_refsource_MISC
- https://github.com/hapifhir/org.hl7.fhir.core/releases/tag/6.9.7 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-3653-68v6-rq57 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2026-45367)Record last updated .