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CVE-2026-49361— Apache Fluss Netty Frame Decoder Memory Exhaustion Vulnerability

Quick assessment

Affected
Apache Software Foundation Apache Fluss (incubating)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache Fluss是美国阿帕奇（Apache）基金会的一个流存储系统。 Apache Fluss 0.8.0版本和0.9.0版本存在安全漏洞，该漏洞源于Netty LengthFieldBasedFrameDecoder配置Integer.MAX_VALUE作为最大帧长度，可能导致未经身份验证的远程攻击者通过发送特制帧头耗尽JVM堆内存，造成拒绝服务。

AI Predicted 7.5 Difficulty: Easy EPSS 0.90% · P58

Affected Version Matrix 2

VendorProduct Version RangeStatus
Apache Software Foundation Apache Fluss (incubating) 0.8.0 affected
0.9.0 affected
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I. Basic Information for CVE-2026-49361

Vulnerability Information
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Vulnerability Title
Apache Fluss Netty Frame Decoder Memory Exhaustion Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Apache Fluss versions prior to 0.9.1 configure the Netty LengthFieldBasedFrameDecoder with Integer.MAX_VALUE as the maximum frame length, allowing unauthenticated remote attackers to exhaust JVM heap memory on TabletServer and CoordinatorServer by sending specially crafted frame headers, resulting in denial of service. This issue affects Apache Fluss (incubating): 0.8.0 and 0.9.0. Users are recommended to upgrade to version 0.9.1, which fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Fluss 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Fluss是美国阿帕奇（Apache）基金会的一个流存储系统。 Apache Fluss 0.8.0版本和0.9.0版本存在安全漏洞，该漏洞源于Netty LengthFieldBasedFrameDecoder配置Integer.MAX_VALUE作为最大帧长度，可能导致未经身份验证的远程攻击者通过发送特制帧头耗尽JVM堆内存，造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Fluss (incubating) 0.8.0 -

II. Public POCs for CVE-2026-49361

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III. Intelligence Information for CVE-2026-49361

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Mailing List Discussions for CVE-2026-49361 (1)

Same Patch Batch · Apache Software Foundation · 2026-06-01 · 28 CVEs total

CVE-2026-44825 8.1 HIGH Apache Solr: Enabling BasicAuth using bin/solr CLI configures additional insecure users
CVE-2026-48827 7.1 HIGH Apache MINA SSHD: Path traversal in org.apache.sshd:sshd-git
CVE-2026-42359 Apache Airflow: Authenticated RCE via XCom PATCH endpoint — XComUpdateBody missing FORBIDD
CVE-2026-49328 Apache Fesod (Incubating): Improper validation of user-supplied URLs leading to SSRF
CVE-2026-40861 Apache Airflow: Arbitrary File Read via Log Symlink following in FileTaskHandler
CVE-2026-40961 Apache Airflow: Open Redirect Bypass Vulnerability
CVE-2026-40963 Apache Airflow: DAG authorization bypass on /ui/structure/structure_data
CVE-2026-41014 Apache Airflow: per-DAG RBAC bypass on /ui/partitioned_dag_runs endpoints
CVE-2026-49267 Apache Airflow: No certificate validation on SMTP STARTTLS connections
CVE-2026-41017 Apache Airflow: JWT cookie missing Secure flag in JWTRefreshMiddleware behind HTTPS-termin
CVE-2026-41084 Apache Airflow: API authorization bypass: bulk TaskInstances allows cross-DAG mutation
CVE-2026-42252 Apache Airflow: BashOperator Jinja2 injection via dag_run.conf — low-privilege user patter
CVE-2026-42360 Apache Airflow: Rendered template truncation bypasses nested sensitive-key masking
CVE-2026-42358 Apache Airflow: Variable masker depth-limit bypass returns cleartext nested secrets
CVE-2026-45192 Apache Airflow: Incomplete Redaction of Sensitive Fields in Connection Extra API Response
CVE-2026-45360 Apache Airflow: Arbitrary import in custom deadline-reference deserialization
CVE-2026-45426 Apache Airflow: Log server JWT authorization bypass via Python lstrip() character strippin
CVE-2026-46764 Apache Airflow: Event Log detail endpoint bypasses DAG-scoped event log permission filter
CVE-2026-48726 Apache Airflow: revoke_token() unreachable in FabAuthManager / KeycloakAuthManager logout
CVE-2026-49298 Apache Airflow: JWT Token Exposure in KubernetesExecutor Command-Line Arguments

Showing top 20 of 28 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same vendor: Apache Software Foundation
Same weakness: CWE-770

V. Comments for CVE-2026-49361

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