CVE-2026-45367 HAPI FHIR: ReDoS via FHIRPath matches()/replaceMatches() in FHIR Validator HTTP Endpoint

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,...

CVE-2026-45367

creationtimestamp| type| source ---|---|--- 2026-07-08 23:00:13+00:00| seen| https://bsky.app/profile/euvd-bot.bsky.social/post/3mq67w72ugf2l...

HAPI FHIR: Incomplete fix for CVE-2026-45367: DSTU2 FHIRPathEngine.matches() missing RegexTimeout protection allows ReDoS

The fix for CVE-2026-45367 added RegexTimeout protection to the matches function in DSTU2016MAY, DSTU3, R4, R4B, and R5, but the DSTU2 module was incompletely patched. In org.hl7.fhir.dstu2, replaceMatches was updated while matches at line 2462 still calls the raw String.matchessw without any...

HAPI FHIR: Incomplete fix for CVE-2026-45367: DSTU2 FHIRPathEngine.matches() missing RegexTimeout protection allows ReDoS

The fix for CVE-2026-45367 added RegexTimeout protection to the matches function in DSTU2016MAY, DSTU3, R4, R4B, and R5, but the DSTU2 module was incompletely patched. In org.hl7.fhir.dstu2, replaceMatches was updated while matches at line 2462 still calls the raw String.matchessw without any...

HAPI FHIR: Incomplete fix for CVE-2026-45367: DSTU2 FHIRPathEngine.matches() missing RegexTimeout protection allows ReDoS

The fix for CVE-2026-45367 added RegexTimeout protection to the matches function in DSTU2016MAY, DSTU3, R4, R4B, and R5, but the DSTU2 module was incompletely patched. In org.hl7.fhir.dstu2, replaceMatches was updated while matches at line 2462 still calls the raw String.matchessw without any...

au.csiro.pathling:encoders (>=5.1.0 <=9.6.0), au.csiro.pathling:fhir-server (>=5.3.1 <=7.2.0) +322 more potentially affected by CVE-2026-45367 via ca.uhn.hapi.fhir:org.hl7.fhir.r4 (>=0.0.1 <=6.9.6)

ca.uhn.hapi.fhir:org.hl7.fhir.r4 MAVEN version =0.0.1, =5.1.0, =5.3.1, =6.2.1, =5.3.1, =5.3.1, =5.3.0, =0.0.9, =5.6.5, =4.0.0, =5.6.5, =4.1.0, =4.0.3, =4.1.0, =4.0.0, =5.2.1 and more Source cves: CVE-2026-45367 Source advisory: OSV:GHSA-3653-68V6-RQ57...

ca.uhn.hapi.fhir:hapi-fhir-base-test-jaxrsserver-kotlin (=6.8.0), ca.uhn.hapi.fhir:hapi-fhir-cli-api (>=6.6.0 <=8.10.0) +185 more potentially affected by CVE-2026-45367 via ca.uhn.hapi.fhir:org.hl7.fhir.dstu2016may (>=6.0.0 <=6.9.5)

ca.uhn.hapi.fhir:org.hl7.fhir.dstu2016may MAVEN version =6.0.0, =6.6.0, =6.6.0, =6.6.0, =6.6.0, =6.6.0, =6.6.0, =6.6.0, =6.8.0, =6.6.0, =6.6.0, =6.6.0, =6.6.0, =6.6.0, =8.10.0 - ca.uhn.hapi.fhir:hapi-fhir-jpaserver-uhnfhirtest =6.8.0 and more Source cves: CVE-2026-45367 Source advisory:...

ca.uhn.hapi.fhir:hapi-fhir-base-test-jaxrsserver-kotlin (>=5.6.5 <=6.8.0), ca.uhn.hapi.fhir:hapi-fhir-cli-api (>=4.0.0 <=8.10.0) +259 more potentially affected by CVE-2026-45367 via ca.uhn.hapi.fhir:org.hl7.fhir.dstu2 (>=0.0.1 <=6.9.5)

ca.uhn.hapi.fhir:org.hl7.fhir.dstu2 MAVEN version =0.0.1, =5.6.5, =4.0.0, =5.6.5, =4.1.0, =4.0.3, =4.1.0, =4.0.0, =4.0.0, =5.0.0, =4.0.0, =5.3.0, =6.2.0, =5.1.0, =6.8.0, =6.4.0, =8.10.0 and more Source cves: CVE-2026-45367 Source advisory: OSV:GHSA-3653-68V6-RQ57...

au.csiro.pathling:encoders (>=6.2.2 <=9.6.0), au.csiro.pathling:fhir-server (>=6.2.2 <=7.2.0) +246 more potentially affected by CVE-2026-45367 via ca.uhn.hapi.fhir:org.hl7.fhir.utilities (>=6.0.0 <=6.9.6)

ca.uhn.hapi.fhir:org.hl7.fhir.utilities MAVEN version =6.0.0, =6.2.2, =6.2.2, =6.2.2, =6.2.2, =6.2.2, =6.2.2, =6.6.0, =6.6.0, =6.6.0, =6.6.0, =6.6.0, =6.6.0, =8.10.0 and more Source cves: CVE-2026-45367 Source advisory: SNYK:JAVA-CAUHNHAPIFHIR-16757891...

ca.uhn.hapi.fhir:hapi-fhir-cli-api (>=3.4.0 <=8.10.0), ca.uhn.hapi.fhir:hapi-fhir-cli-app (>=5.6.5 <=7.4.5) +262 more potentially affected by CVE-2026-45367 via ca.uhn.hapi.fhir:org.hl7.fhir.r5 (>=0.0.1 <=6.9.5)

ca.uhn.hapi.fhir:org.hl7.fhir.r5 MAVEN version =0.0.1, =3.4.0, =5.6.5, =4.1.0, =4.0.3, =4.1.0, =4.0.0, =5.0.0, =4.0.0, =5.3.0, =6.2.0, =5.1.0, =6.8.0, =6.4.0, =5.3.0, =4.0.0, =5.5.7 and more Source cves: CVE-2026-45367 Source advisory: OSV:GHSA-3653-68V6-RQ57...

ca.uhn.hapi.fhir:hapi-fhir-base-test-jaxrsserver-kotlin (>=5.6.5 <=6.8.0), ca.uhn.hapi.fhir:hapi-fhir-cli-api (>=4.0.3 <=8.10.0) +251 more potentially affected by CVE-2026-45367 via ca.uhn.hapi.fhir:org.hl7.fhir.dstu2016may (>=0.0.1 <=6.9.5)

ca.uhn.hapi.fhir:org.hl7.fhir.dstu2016may MAVEN version =0.0.1, =5.6.5, =4.0.3, =5.6.5, =4.1.0, =4.0.3, =4.1.0, =4.0.3, =4.0.0, =5.0.0, =4.0.3, =5.3.0, =6.2.0, =5.1.0, =6.8.0, =6.4.0, =8.10.0 and more Source cves: CVE-2026-45367 Source advisory: OSV:GHSA-3653-68V6-RQ57...

ca.uhn.hapi.fhir:hapi-fhir-cli-api (>=3.4.0 <=8.10.0), ca.uhn.hapi.fhir:hapi-fhir-cli-app (>=5.7.7 <=7.4.5) +209 more potentially affected by CVE-2026-45367 via ca.uhn.hapi.fhir:org.hl7.fhir.r4b (>=5.6.22 <=6.9.5)

ca.uhn.hapi.fhir:org.hl7.fhir.r4b MAVEN version =5.6.22, =3.4.0, =5.7.7, =5.7.0, =5.7.0, =5.7.0, =5.7.0, =5.7.0, =6.2.0, =6.8.0, =6.4.0, =5.7.0, =5.7.0, =5.7.0, =5.7.0, =5.7.7, =6.8.0 and more Source cves: CVE-2026-45367 Source advisory: OSV:GHSA-3653-68V6-RQ57...

au.csiro.pathling:encoders (>=6.2.2 <=9.6.0), au.csiro.pathling:fhir-server (>=6.2.2 <=7.2.0) +220 more potentially affected by CVE-2026-45367 via ca.uhn.hapi.fhir:org.hl7.fhir.r4 (>=6.0.0 <=6.9.6)

ca.uhn.hapi.fhir:org.hl7.fhir.r4 MAVEN version =6.0.0, =6.2.2, =6.2.2, =6.2.2, =6.2.2, =6.2.2, =6.2.2, =6.6.0, =6.6.0, =6.6.0, =6.6.0, =6.6.0, =6.6.0, =8.10.0 and more Source cves: CVE-2026-45367 Source advisory: SNYK:JAVA-CAUHNHAPIFHIR-16757888...