{"answers":{"affected":"6 open source packages ship an affected version, including com.cedarpolicy:cedar-java.","exploited":"There is no known exploitation of CVE-2026-55772 in the wild and no public exploit code.","fix":"Upgrade com.cedarpolicy:cedar-java to a fixed version for your release line: 2.3.6, 3.4.1 or 4.9.0.","what":"CVE-2026-55772 is a high-severity vulnerability in cedar-policy cedar-java, published on 13 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-55772 and fix it if it is affected.\n\nWhat it is: CVE-2026-55772 is a high-severity vulnerability in cedar-policy cedar-java, published on 13 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-55772 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- com.cedarpolicy:cedar-java (Maven): affected all versions; fixed in 2.3.6\n- com.cedarpolicy:cedar-java (Maven): affected all versions; fixed in 2.3.6\n- com.cedarpolicy:cedar-java (Maven): affected from 3.1.2; fixed in 3.4.1\n- com.cedarpolicy:cedar-java (Maven): affected from 3.1.2; fixed in 3.4.1\n- com.cedarpolicy:cedar-java (Maven): affected from 4.0.0; fixed in 4.9.0\n- com.cedarpolicy:cedar-java (Maven): affected from 4.0.0; fixed in 4.9.0\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-55772/ (Markdown: https://insights.sbomify.com/CVE-2026-55772/index.md)","id":"CVE-2026-55772","markdown":"https://insights.sbomify.com/CVE-2026-55772/index.md","name":"CVE-2026-55772","record":{"aliases":["GHSA-93g4-m6xv-cmvr"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Cedar policy library","requires_auth":"low_privilege","summary":"Attackers can bypass authorization policies by injecting reserved keys into CedarMaps, causing type confusion in the Rust evaluator.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-843","name":"Access of Resource Using Incompatible Type"}],"description":"CedarJava is an open source Java implementation of the Cedar policy language, used for fine-grained authorization decisions. In versions prior to 2.3.6, 3.4.1 and 4.9.0, under certain circumstances, improper input handling could allow Record-to-Entity type confusion across the Java-Rust FFI boundary. CedarJava sends authorization requests to the Rust cedar-policy evaluator as JSON. The JSON protocol reserves magic single-key object shapes (__entity and __extn) for entity references and extension values. When serializing a CedarMap, there is no validation preventing these reserved keys from being used. If an integrating service builds a CedarMap from caller-supplied key/value data (such as request headers, user-defined metadata, or resource tags), an actor who controls those keys could cause the Rust evaluator to interpret a record as an entity reference. This issue requires the integrating service to build a CedarMap where the an actor controls the keys, and a policy must reference that value in a when/unless clause. This vulnerability has been fixed in versions 2.3.6, 3.4.1, and 4.9.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"CedarJava has a type confusion vulnerability","id":"CVE-2026-55772","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"other","year":"2026"},"n_packages":6,"n_references":1,"next":{"headline":"CedarJava has a policy injection vulnerability","id":"CVE-2026-55773"},"packages":[{"ecosystem":"Maven","fixed":["2.3.6"],"introduced":["0"],"last_affected":[],"package":"com.cedarpolicy:cedar-java","purl":null,"source":"GHSA-93g4-m6xv-cmvr"},{"ecosystem":"Maven","fixed":["2.3.6"],"introduced":["0"],"last_affected":[],"package":"com.cedarpolicy:cedar-java","purl":"pkg:maven/com.cedarpolicy/cedar-java","source":"GHSA-93g4-m6xv-cmvr"},{"ecosystem":"Maven","fixed":["3.4.1"],"introduced":["3.1.2"],"last_affected":[],"package":"com.cedarpolicy:cedar-java","purl":null,"source":"GHSA-93g4-m6xv-cmvr"},{"ecosystem":"Maven","fixed":["3.4.1"],"introduced":["3.1.2"],"last_affected":[],"package":"com.cedarpolicy:cedar-java","purl":"pkg:maven/com.cedarpolicy/cedar-java","source":"GHSA-93g4-m6xv-cmvr"},{"ecosystem":"Maven","fixed":["4.9.0"],"introduced":["4.0.0"],"last_affected":[],"package":"com.cedarpolicy:cedar-java","purl":null,"source":"GHSA-93g4-m6xv-cmvr"},{"ecosystem":"Maven","fixed":["4.9.0"],"introduced":["4.0.0"],"last_affected":[],"package":"com.cedarpolicy:cedar-java","purl":"pkg:maven/com.cedarpolicy/cedar-java","source":"GHSA-93g4-m6xv-cmvr"}],"prev":{"headline":"CedarJava has policy injection, type confusion, and incorrect equality comparison vulnerabilities","id":"CVE-2026-55771"},"products":["cedar-java"],"published":"2026-07-13","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-07-21","vendors":["cedar-policy"]},"summary":"Attackers can bypass authorization policies by injecting reserved keys into CedarMaps, causing type confusion in the Rust evaluator.","url":"https://insights.sbomify.com/CVE-2026-55772/"}