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CVE-2026-73095— Apache Juneau: Denial of service via unbounded memory allocation in parsers and REST request handling

Quick assessment

Affected
Apache Software Foundation Apache Juneau
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 Juneau 存在“无限制或无节流机制的资源分配”漏洞。 该漏洞源于默认启用的 MessagePack 解析器：REST 服务器会根据输入数据中的长度字段来分配缓冲区大小。未认证的攻击者仅需发送少量字节，即可触发数 GB 级别的内存分配，从而引发 OutOfMemoryError 错误，导致拒绝服务（DoS）。此次修复同时解决了 REST 请求处理中其他无界内存分配问题（包括多部分上传和请求读取器缓冲区）。 受影响版本：Apache Juneau 9.2.0 及之前版本。 建议用户升级至 9.2.1

CVSS 8.7 · High

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2026-73095

Vulnerability Information
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Vulnerability Title
Apache Juneau: Denial of service via unbounded memory allocation in parsers and REST request handling
Source: CVE Program / CVE List V5
Vulnerability Description
Allocation of Resources Without Limits or Throttling vulnerability in Apache Juneau. The MessagePack parser, which the REST server enables by default, sizes buffers from length values in the input. An unauthenticated client can send a few bytes that force a multi-gigabyte allocation and an OutOfMemoryError, causing denial of service. Related unbounded allocations in REST request handling (multipart uploads and request reader buffers) are fixed at the same time. This issue affects Apache Juneau: through 9.2.0. Users are recommended to upgrade to version 9.2.1, which fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Juneau 0 ~ 9.2.1 -
Apache Software Foundation Apache Juneau 0 ~ 9.2.1 -

II. Public POCs for CVE-2026-73095

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III. Intelligence Information for CVE-2026-73095

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Other References for CVE-2026-73095 (1)

Same Patch Batch · Apache Software Foundation · 2026-11-05 · 58 CVEs total

CVE-2026-73098 10.0 CRITICAL Apache Juneau: Unsafe reflection allows attacker-controlled class initialization during pa
CVE-2026-73099 10.0 CRITICAL Apache Juneau: Cross-site request forgery via default-enabled content query-parameter body
CVE-2026-73100 10.0 CRITICAL Apache Juneau: Sensitive request headers logged in cleartext by the default request logger
CVE-2026-73101 10.0 CRITICAL Apache Juneau: Internal exception class and message disclosed via error response header an
CVE-2026-73116 10.0 CRITICAL Apache Juneau: REST client forwards credentials to a different origin when following HTTP
CVE-2026-73117 10.0 CRITICAL Apache Juneau: Response header CRLF injection and open redirect when applications set head
CVE-2026-96677 10.0 CRITICAL Apache Juneau: Cross-site scripting via unescaped request variables in HTML-doc chrome
CVE-2026-121489 10.0 CRITICAL Apache Juneau: Path traversal in DirectoryResource allows reading files outside the config
CVE-2026-103864 Apache Sling Engine: Request-derived values reach log sinks without CR/LF neutralization
CVE-2026-97355 Apache OFBiz: Hard-coded Credentials in AdminServer Enable Unauthenticated Denial of Servi
CVE-2026-109856 Apache OFBiz: Missing Authorization in Financial Account Services Enables Unauthorized Bal
CVE-2026-109837 Apache OFBiz: Authorization Bypass Through User-Controlled Key in Order Returns Enables Cr
CVE-2026-109129 Apache OFBiz: Authorization Bypass Through User-Controlled Key in OrderServices Enables Un
CVE-2026-105461 Apache OFBiz: Missing authorization in updateOrderItems allows view-only users to modify o
CVE-2026-105330 Apache OFBiz: Use of Hard-coded Cryptographic Key in JWT Token Authentication Enables Unau
CVE-2026-105325 Apache OFBiz: Missing authorization in payment application services allows view-only users
CVE-2026-100228 Apache OFBiz: Improper Input Validation in Order Returns Enables Unauthorized Refund Price
CVE-2026-100168 Apache OFBiz: Missing Authorization vulnerability
CVE-2026-97356 Apache OFBiz: Insufficiently Protected Credentials in ViewFile Enable Authentication Bypas
CVE-2026-92887 Apache OFBiz: REST API authentication bypassed by default when the auth attribute is omitt

Showing top 20 of 58 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

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