{"cve":"CVE-2022-26650","nvd":{"published":"2022-05-17T08:15:06.423","modified":"2026-06-17T04:35:35.393","status":"Modified","description":"In Apache ShenYui, ShenYu-Bootstrap, RegexPredicateJudge.java uses Pattern.matches(conditionData.getParamValue(), realData) to make judgments, where both parameters are controllable by the user. This can cause an attacker pass in malicious regular expressions and characters causing a resource exhaustion. This issue affects Apache ShenYu (incubating) 2.4.0, 2.4.1 and 2.4.2 and is fixed in 2.4.3.","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:H","score":7.5},"cwes":["CWE-1333"],"references":["http://www.openwall.com/lists/oss-security/2022/05/17/3","https://lists.apache.org/thread/8rp33m3nm4bwtx3qx76mqynth3t3d673","http://www.openwall.com/lists/oss-security/2022/05/17/3","https://lists.apache.org/thread/8rp33m3nm4bwtx3qx76mqynth3t3d673"],"products":["apache:shenyu"],"source":"nvd","synced_at":"2026-10-19T21:31:59.322382750+00:00"},"epss":{"cve":"CVE-2022-26650","score":0.02663,"percentile":0.85713,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-cw56-j3fm-7w57","url":"https://osv.dev/vulnerability/GHSA-cw56-j3fm-7w57","summary":"Regular expression denial of service in Apache ShenYu","modified":"2024-02-16T08:24:11.530974Z","packages":[{"ecosystem":"Maven","name":"org.apache.shenyu:shenyu","purl":"pkg:maven/org.apache.shenyu/shenyu","ranges":[">=2.4.0 <2.4.3"],"fixed":["2.4.3"]},{"ecosystem":"Maven","name":"org.apache.shenyu:shenyu-bootstrap","purl":"pkg:maven/org.apache.shenyu/shenyu-bootstrap","ranges":[">=2.4.0 <2.4.3"],"fixed":["2.4.3"]}]}],"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."]}