Vulnerability · Published May 17, 2022 · Assigned by apache

CVE-2022-26650Apache ShenYu (incubating) Regular expression denial of service

High 7.5

In plain English

A high-severity regular-expression denial of service in Apache ShenYu (incubating) from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.7% (higher than 86% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.5High

Exploit odds (30 days)2.7%top 14.2% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Maven	org.apache.shenyu:shenyu	2.4.3	GHSA-cw56-j3fm-7w57
Maven	org.apache.shenyu:shenyu-bootstrap	2.4.3	GHSA-cw56-j3fm-7w57

Affected products (as reported)

Vendor	Product	Versions
Apache Software Foundation	Apache ShenYu (incubating)	unspecified – before 2.4.3

Weakness: CWE-1333

References

https://lists.apache.org/thread/8rp33m3nm4bwtx3qx76mqynth3t3d673 x_refsource_MISC
[oss-security] 20220517 CVE-2022-26650: Apache ShenYu (incubating) Regular expression denial of service mailing-list, x_refsource_MLIST