{"cve":"CVE-2023-51079","nvd":{"published":"2023-12-27T21:15:08.350","modified":"2026-06-17T06:40:30.777","status":"Modified","description":"A long execution time can occur in the ParseTools.subCompileExpression method in MVEL 2.5.0.Final because of many Java class lookups. NOTE: the vendor disputes this because \"the only thing that you could expect is that the parser will take a crazy amount of time to complete its task.\"","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3},"cwes":[],"references":["https://github.com/mvel/mvel/issues/348","https://github.com/mvel/mvel/issues/348#issuecomment-1874047271","https://github.com/mvel/mvel/issues/348","https://github.com/mvel/mvel/issues/348#issuecomment-1874047271"],"products":["mvel:mvel"],"source":"nvd","synced_at":"2026-10-19T21:43:38.875533635+00:00"},"epss":{"cve":"CVE-2023-51079","score":0.00737,"percentile":0.54522,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-h63j-xqx6-w58r","url":"https://osv.dev/vulnerability/GHSA-h63j-xqx6-w58r","summary":"mvel2 TimeOut error exists in the ParseTools.subCompileExpression method","modified":"2024-01-08T15:54:10Z","packages":[{"ecosystem":"Maven","name":"org.mvel:mvel2","purl":"pkg:maven/org.mvel/mvel2","ranges":["2.5.0.Final"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}