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CVE-2021-45029

33
FAUCET Score

CVE-2021-45029 is a critical remote code execution (RCE) vulnerability affecting Apache ShenYu versions 2.4.0 and 2.4.1, stemming from Groovy Code Injection and SpEL Injection. With a CVSS score of 9.8 (Critical), this flaw allows unauthenticated attackers to execute arbitrary code over the network with low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation (KEV: No) and no public exploit intelligence (Metasploit, Nuclei, ExploitDB: None), the vulnerability has garnered some community discussion, indicating awareness.

Impacted Technologies

VendorProductVersion(s)CPE
2.4.0CPE matchmatch criteria
cpe:2.3:a:apache:shenyu:2.4.0:*:*:*:*:*:*:*
2.4.1CPE matchmatch criteria
cpe:2.3:a:apache:shenyu:2.4.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
6.03%
Probability of exploitation in next 30 days
EPSS Percentile
92.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0603 is in the 87th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

mavenpatch availablevia ghsa
Product: org.apache.shenyu:shenyu-commonFixed in: 2.4.2

Vendor Advisories (1)

mavenGHSA-gh38-x2wm-xmc8critical

Code injection in ShenYu

Jan 28, 2022

References

lists.apache.org / thread/3zzmwvg3012tg306x8o893fvdcssx639
Mailing ListVendor Advisory
openwall.com / lists/oss-security/2022/01/25/8
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2022/01/26/1
Mailing ListThird Party Advisory