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CVE-2023-51388

30
FAUCET Score

CVE-2023-51388 is a critical vulnerability affecting Apache Hertzbeat, a real-time monitoring system. It stems from improper use of AviatorEvaluator in CalculateAlarm.java, allowing unauthenticated attackers to execute arbitrary AviatorScript code due to a lack of security policies. This results in a CVSS score of 9.8 (Critical), indicating complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code, the vulnerability has garnered significant community discussion, suggesting potential interest from threat actors. Organizations using Hertzbeat should upgrade to version 1.4.1 immediately to remediate this high-risk flaw.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.4.1CPE matchmatch criteria
cpe:2.3:a:apache:hertzbeat:*:*:*:*:*:*:*:*

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
1.31%
Probability of exploitation in next 30 days
EPSS Percentile
67.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0131 is in the 54th percentile among its peer group of 36,835 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)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / dromara/hertzbeat/commit/8dcf050e27ca95d15460a7ba98a3df8a9cd1d3d2
Patch
github.com / dromara/hertzbeat/security/advisories/GHSA-mcqg-gqxr-hqgj
ExploitVendor Advisory