{"id":"CVE-2026-83530","summary":"Uncontrolled Memory Allocation in cel-go","details":"A user could provide an expression whose string length is longer than the ParserExpressionSizeLimit() configured on the CEL environment, and a memory allocation would occur proportional to the size of the input before the limit would be checked / enforced.","modified":"2026-09-11T03:48:39.849426219Z","published":"2026-09-09T14:56:22.918Z","database_specific":{"cwe_ids":["CWE-789"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/83xxx/CVE-2026-83530.json","cna_assigner":"Google"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/83xxx/CVE-2026-83530.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-83530"},{"type":"FIX","url":"https://github.com/cel-expr/cel-go/pull/1302"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/cel-expr/cel-go","events":[{"introduced":"0"},{"fixed":"fa16799e423d709cfb1a20c10c1db7dc6e640e55"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"0.29.0"}],"source":"AFFECTED_FIELD"}}],"versions":["v0.28.1","v0.28.0","v0.28.0-alpha","v0.27.0","v0.26.1","v0.26.0","v0.25.1","v0.25.0","v0.24.1","v0.24.0","v0.24.0-beta","v0.24.0-alpha","v0.23.2","v0.23.1","v0.23.0","v0.22.1","v0.22.0","v0.21.0","v0.20.1","v0.20.0","v0.19.0","v0.18.2","v0.18.1","v0.18.0","v0.17.1","v0.16.0","v0.17.0","v0.15.3","v0.15.2","v0.15.1","v0.15.0","v0.14.0","v0.11.4","v0.10.1","v0.12.5","v0.13.0","v0.12.4","v0.12.3","v0.12.2","v0.12.1","v0.12.0","v0.11.3","v0.11.2","v0.11.1","v0.11.0","v0.11.0-pre","v0.10.0","v0.9.0","v0.8.0","v0.7.3","v0.7.2","v0.7.1","v0.7.0","v0.6.0","v0.5.1","v0.5.0","v0.4.2","v0.4.1","v0.4.0","v0.4.0-beta.1","v0.4.0-alpha.2","v0.4.0-alpha.1","v0.3.2","v0.3.1","v0.3.0","v0.2.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-83530.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:L/SC:N/SI:N/SA:N"}]}