Apache IoTDB: RPC service denial of service via unchecked Thrift string length (CVE-2026-44630) | HOL Guard CVE

High · CVSS 7.5CVE-2026-44630

Apache IoTDB: RPC service denial of service via unchecked Thrift string length

Answer in brief

CVE-2026-44630 records a High severity (CVSS 7.5) vulnerability in Apache IoTDB: RPC service denial of service via unchecked Thrift string length. The current sources do not mark it as known exploited. The current feed maps Apache Software Foundation/Apache IoTDB (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 10, 2026Updated Aug 12, 2026Source checked Sep 24, 2026First seen by HOL Aug 10, 2026Material review Aug 12, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.5
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Apache Software Foundation/Apache IoTDB (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Apache Software Foundation/Apache IoTDBgeneric	>=0 <1.3.8 \|\| >=2.0.0 <2.0.10	1.3.8, 2.0.10

Recommended response

Check inventory. Check lockfiles and deployed manifests for Apache Software Foundation/Apache IoTDB.
Review the reported fix. Update Apache Software Foundation/Apache IoTDB to 1.3.8 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 10, 2026

Sources and claim methodology

Upstream source description

Improper validation of length fields in the Apache IoTDB RPC service may allow a remote unauthenticated attacker to cause a denial of service. By sending a crafted malformed Thrift frame, an attacker can cause IoTDB to allocate an excessive amount of memory and crash with an OutOfMemoryError. This issue affects Apache IoTDB: before 1.3.8, from 2.0.0 before 2.0.9. Users are recommended to upgrade to version 2.0.10, which fixes the issue.

Quoted source text, attributed separately from HOL analysis.