{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-41732: In Spring for Apache Pulsar, overly broad trusted-package matching in header mapper exposes JDK classes to deserialization","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-41732","status":"final","version":"1","initial_release_date":"2026-06-09T23:49:31.164Z","current_release_date":"2026-06-10T18:52:44.574Z","revision_history":[{"date":"2026-06-09T23:49:31.164Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"JsonPulsarHeaderMapper matched type headers against trusted packages using a prefix check, meaning that trusting any package implicitly trusted all of its subpackages. Additionally, an empty trusted-packages configuration fell back to trusting all packages rather than applying a safe default allow-list.\n\nAffected versions:\nSpring for Apache Pulsar 2.0.0 through 2.0.5; 1.2.0 through 1.2.17; 1.1.0 through 1.1.17.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-41732 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-41732"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-41732"},{"category":"external","summary":"spring.io","url":"https://spring.io/security/cve-2026-41732"}]},"product_tree":{"branches":[{"category":"vendor","name":"Spring","branches":[{"category":"product_name","name":"Spring for Apache Pulsar","branches":[{"category":"product_version_range","name":">=2.0.0 <2.0.6","product":{"name":"Spring Spring for Apache Pulsar >=2.0.0 <2.0.6","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:spring:spring_for_apache_pulsar:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=1.2.0 <1.2.18","product":{"name":"Spring Spring for Apache Pulsar >=1.2.0 <1.2.18","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:spring:spring_for_apache_pulsar:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=1.1.0 <1.1.18","product":{"name":"Spring Spring for Apache Pulsar >=1.1.0 <1.1.18","product_id":"CSAFPID-3","product_identification_helper":{"cpe":"cpe:2.3:a:spring:spring_for_apache_pulsar:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-41732","title":"In Spring for Apache Pulsar, overly broad trusted-package matching in header mapper exposes JDK classes to deserialization","notes":[{"category":"description","text":"JsonPulsarHeaderMapper matched type headers against trusted packages using a prefix check, meaning that trusting any package implicitly trusted all of its subpackages. Additionally, an empty trusted-packages configuration fell back to trusting all packages rather than applying a safe default allow-list.\n\nAffected versions:\nSpring for Apache Pulsar 2.0.0 through 2.0.5; 1.2.0 through 1.2.17; 1.1.0 through 1.1.17.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1","CSAFPID-2","CSAFPID-3"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.1,"baseSeverity":"HIGH"},"products":["CSAFPID-1","CSAFPID-2","CSAFPID-3"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 1.1.18, 1.2.18, 2.0.6.","product_ids":["CSAFPID-1","CSAFPID-2","CSAFPID-3"]}]}]}