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CVE-2026-40008

42
FAUCET Score

Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Apache IoTDB. The pipe processor reads a fully qualified Java class name and instantiates it using Class.forName().newInstance() without any validation or allowlisting. This issue affects Apache IoTDB: from 1.0.0 before 2.0.10. Users are recommended to upgrade to version 2.0.10, which fixes the issue.

First published: Jul 10, 2026Last modified: Jul 10, 2026

Impacted Technologies

VendorProductVersion(s)CPE
Apache Software FoundationApache IoTDB
>= 1.0.0, < 2.0.10CNA affecteddefault unaffected

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
0.42%
Probability of exploitation in next 30 days
EPSS Percentile
34.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0042 is in the 12th 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

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

Remediation

Vendor Patches (1)

apachevendor investigatingvia vendor_rss
View patch

Vendor Advisories (2)

apacheapache:www.mail-archive.com/[email protected]/msg11428.html

CVE-2026-40008: Apache IoTDB: Arbitrary Class Instantiation via Pipe Transfer RPC

Jul 10, 2026
apacheapache:www.mail-archive.com/[email protected]/msg11427.html

CVE-2026-40008: Apache IoTDB: Arbitrary Class Instantiation via Pipe Transfer RPC

Jul 10, 2026

References

openwall.com / lists/oss-security/2026/07/10/5
lists.apache.org / thread/fm8cpvzbox2qqy99ztglm8wkk1nrg9ng