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Apache InLong CVE-2026-63046

| EUVDEUVD-2026-63849 HIGH
Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') (CWE-88)
2026-08-21 apache GHSA-jc7r-r7p4-f656
8.8
CVSS 3.1 · Vendor: apache
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Gain access to InLong agent management interface
  2. Delivery
    Craft module definition with injected shell metacharacters
  3. Exploit
    Submit malicious module to ModuleManager
  4. Execution
    ExcuteLinux.exeCmd() passes unsanitized input to OS shell
  5. Persist
    Arbitrary commands execute as InLong agent process user
  6. Impact
    Full host compromise

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Argument sanitization
Exploitation Conditions

The attacker must have access to submit module definitions or configurations to the InLong Agent Installer's ModuleManager component on an affected Linux host running Apache InLong version 2.0.0 through 2.3.x. The vulnerable code path is explicitly Linux-specific based on the ExcuteLinux.exeCmd() method name - Windows deployments are not confirmed affected by this specific code path. Exploitation is limited by the requirement to interact with the agent management interface, which in typical InLong architectures is an internal service not exposed to the public internet. Authentication requirements for reaching ModuleManager are not confirmed from available data, as no CVSS vector is provided. The key limiting factor is network and credential access to the agent management plane rather than any non-default configuration setting - the vulnerable code path appears active in all default InLong agent installations within the affected version range.

Impact

No CVSS score or vector was provided in the available intelligence, and no EPSS probability figure is available, substantially limiting quantitative risk scoring. The vulnerability is not listed in CISA's Known Exploited Vulnerabilities catalog, and no public exploit code has been identified at time of analysis. Despite the absence of these signals, the qualitative impact is high: successful exploitation yields arbitrary shell command execution on the agent host, representing full system compromise. The vulnerability is located in a module management subsystem, which typically requires some level of authenticated or privileged access to reach - this partially constrains the exposed attack surface compared to a fully unauthenticated network-facing flaw. However, the complete absence of filtering or whitelisting suggests exploitation would be straightforward for any attacker who can reach the relevant interface. Apache InLong deployments tend to reside in internal data pipeline infrastructure rather than public-facing systems, which further contextualizes real-world exposure - but internal network access is not an adequate mitigating control on its own. Organizations should treat the patch as urgent given the arbitrary-execution impact class.

Exploit ScenarioDerived

An attacker with authenticated access to the InLong agent management interface crafts a malicious module definition containing shell metacharacters in a parameter passed to ExcuteLinux.exeCmd(). When the ModuleManager processes this definition, the injected arguments are passed unsanitized to the OS shell, executing arbitrary commands - such as establishing a reverse shell or exfiltrating credentials - under the process account of the InLong agent. No public exploit has been identified at time of analysis, but the straightforward nature of argument injection makes exploitation accessible to any attacker who can reach the interface.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Aug 21, 2026

Argument injection in Apache InLong's Agent Installer (versions 2.0.0 through 2.3.x) enables arbitrary shell command execution via the ModuleManager's ExcuteLinux.exeCmd() method, which applies no input filtering or whitelist validation. Any deployment running InLong agents within the affected version range is exposed to OS-level command execution on the agent host system. Apache has released version 2.4.0 as the authoritative fix; no public exploit has been identified at time of analysis.

RemediationAI

The primary remediation is to upgrade Apache InLong to version 2.4.0 or later, as directed by the Apache security advisory at https://lists.apache.org/thread/2pgz70rz9ozfm7vm5c33po3yyspq846y. For deployments that cannot immediately upgrade, Apache provides two targeted cherry-pick commits via GitHub pull requests: https://github.com/apache/inlong/pull/12151 and https://github.com/apache/inlong/pull/12155, which should be applied to the running branch. As a compensating control where patching is delayed, organizations should restrict network access to the InLong agent management interface using firewall rules or network segmentation, limiting which hosts and users can submit module configurations. Additionally, running InLong agents under a least-privilege OS user account will constrain the blast radius of any successful exploitation by limiting the OS commands that can be executed. Note that these compensating controls reduce exposure but do not eliminate the vulnerability.

Affected VersionsENISA

Apache InLong 2.0.0 <2.4.0

Affected Packages

euvd apache_inlong fix: 2.4.0

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Apache InLong is an Apache Software Foundation project providing a one-stop data integration framework for real-time and batch streaming pipelines, commonly deployed in enterprise data lake and ETL architectures. The affected component is the Agent Installer's ModuleManager, responsible for installing and managing agent modules on host systems. The vulnerability is classified as CWE-88 (Improper Neutralization of Argument Delimiters in a Command - Argument Injection): the ExcuteLinux.exeCmd() method constructs and executes OS-level shell commands using externally supplied input without sanitizing argument delimiters such as semicolons, pipes, backticks, or spaces. This allows an attacker to append or substitute shell arguments, effectively injecting arbitrary commands into the execution context. The affected CPE is cpe:2.3:a:apache_software_foundation:apache_inlong:*:*:*:*:*:*:*:* covering versions 2.0.0 up to but not including 2.4.0. The method name ExcuteLinux.exeCmd() strongly implies this execution path is Linux-platform-specific.

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Severity by source

Vendor (apache) PRIMARY 8.8 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 9.9 CRITICAL

Network-reachable management interface assumed; PR:L because submitting module configs requires authenticated access; S:C for OS-level shell breakout from the application context.

3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Primary rating from Vendor (apache).

CVSS VectorVendor: apache

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Patch available
Aug 21, 2026 - 09:16 EUVD
CVE Published
Aug 21, 2026 - 08:37 cve.org
HIGH

DescriptionCVE.org

Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') vulnerability in Apache InLong. Agent Installer's ModuleManager executes arbitrary shell commands via ExcuteLinux.exeCmd() with no filtering or whitelist validation.

This issue affects Apache InLong: from 2.0.0 before 2.4.0.

Users are advised to upgrade to Apache InLong's 2.4.0 or cherry-pick [1]/[2] to solve it.

[1]  https://github.com/apache/inlong/pull/12151 .

[2]  https://github.com/apache/inlong/pull/12155 .

Executive ViewAI

Why It Matters

Apache InLong Agent Installer versions 2.0.0 through 2.3.x contain a critical remote code execution vulnerability enabling compromise of data processing infrastructure, risking data theft and operational disruption. Organizations deploying affected versions face immediate risk of complete infrastructure compromise. Patch to version 2.4.0 immediately to mitigate this exposure.

Business Impact: High
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.2%
Top 94% exploitable
Prevalence
Medium
Apache-backed enterprise data integration platform, significant but not ubiquitous
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.2%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
High
Technical Impact
Total

Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Code Injection CRITICAL

Code injection occurs when an application accepts user input and passes it directly into a language interpreter or evaluator without proper sanitization.

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