{"id":"CVE-2026-75936","summary":"Memory-amplification denial of service via GZIP decompression bomb in Amazon ion-java","details":"Improper handling of highly compressed data in the GZIP auto-decompression handler in Amazon ion-java before 1.12.0 might allow remote actors to cause a denial of service via a crafted compressed Ion document that expands to an arbitrarily large size upon decompression.\n\n\n\nTo remediate this issue, users should upgrade to version 1.12.0 and configure withGzipDecompressionEnabled(false) and/or set an explicit withMaximumBufferSize() when parsing untrusted input.","aliases":["GHSA-wj53-jv76-65mc"],"modified":"2026-08-22T03:31:14.040019403Z","published":"2026-08-18T19:34:19.472Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75936.json","cna_assigner":"AMZN","cwe_ids":["CWE-409"]},"references":[{"type":"ADVISORY","url":"https://aws.amazon.com/security/security-bulletins/2026-083-aws/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75936.json"},{"type":"ADVISORY","url":"https://github.com/amazon-ion/ion-java/security/advisories/GHSA-wj53-jv76-65mc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-75936"},{"type":"FIX","url":"https://github.com/amazon-ion/ion-java/releases/tag/v1.12.0"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/amazon-ion/ion-java","events":[{"introduced":"0"},{"fixed":"fb918688bff7dfcfb377d8dbdea65fc785d5ae99"}],"database_specific":{"source":["AFFECTED_FIELD","DESCRIPTION","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"1.12.0"}]}}],"versions":["v1.11.11","v1.11.0","v1.10.5","v1.10.4","v1.10.3","v1.10.2","v1.10.1","v1.10.0","v1.9.6","v1.9.5","v1.9.4","v1.9.3","v1.9.0","v1.9.1","v1.8.3","v1.8.2","v1.8.1","v1.8.0","v1.7.1","v1.7.0","v1.6.1","v1.6.0","com_amazon_ion_v1.5.1","com_amazon_ion_v1.5.0","com_amazon_ion_v1.4.0","v1.3.1","v1.3.0","v1.2.0","v1.1.2","v1.1.1","v1.1.0","v1.0.2","v1.0.1","v1.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-75936.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}