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CVE-2026-83531— Apache Camel: Camel-Dynamic-Router Control Endpoint Compiles Predicate Expressions Supplied by Control Messages

Quick assessment

Affected
Apache Software Foundation Apache Camel
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 Camel 中存在“代码生成控制不当”（代码注入）以及“表达式语言语句中特殊元素中和不当”（表达式语言注入）漏洞。 受影响版本范围： Apache Camel 4.4.0 至 4.18.5（不含 4.18.5） Apache Camel 4.19.0 至 4.22.1（不含 4.22.1） 漏洞详情： 自 4.4.0 版本引入的 端点允许路由参与者通过发送控制消息来管理动态路由器的订阅。在处理订阅或更新请求时， 会从传入消息中获取用于编译的订阅谓词（predicate）及其所使用的语言名称。这些参数可

CVSS 8.8 · High
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I. Basic Information for CVE-2026-83531

Vulnerability Information
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Vulnerability Title
Apache Camel: Camel-Dynamic-Router Control Endpoint Compiles Predicate Expressions Supplied by Control Messages
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Control of Generation of Code ('Code Injection'), Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection') vulnerability in Apache Camel. This issue affects Apache Camel: from 4.4.0 before 4.18.5, from 4.19.0 before 4.22.1. The dynamic-router-control endpoint, introduced in 4.4.0, lets routing participants manage Dynamic Router subscriptions by sending control messages. When it handled a subscribe or update request, DynamicRouterControlProducer took the subscription predicate and the name of the language used to compile it from the incoming message, either from the predicate and expressionLanguage fields of a DynamicRouterControlMessage body or from the CamelDynamicRouterPredicate and CamelDynamicRouterExpressionLanguage headers. DynamicRouterControlService then resolved that language from the CamelContext and compiled the expression into a Predicate, with no allow-list and no opt-in. The compiled predicate was added to the channel's rule base and evaluated against every exchange routed through the corresponding dynamic-router endpoint for as long as the subscription existed. A route that forwards messages from an external transport to the control endpoint, as shown in the component documentation for routing participants in other JVMs or applications, therefore let any actor able to send a message on that transport supply an expression of their choosing, which was evaluated with the privileges of the Camel process. Any expression language available on the classpath could be selected, including the simple language, which is always present and was the default on the header path, so removing optional expression languages from the classpath did not prevent the issue. Exploitation requires the ability to send a message on a transport whose route forwards it to a dynamic-router-control endpoint; no other authentication or user interaction is needed. Releases before 4.4.0 are not affected, because their control channel took predicate expressions only from the endpoint URI configured by the route author. Users are recommended to upgrade to version 4.23.0, which fixes the issue. If users are on the 4.22.x releases stream, then they are suggested to upgrade to 4.22.1. If users are on the 4.18.x releases stream, then they are suggested to upgrade to 4.18.5. The 4.14.x releases stream and earlier reached end of life before this issue was resolved and will not receive a fix, so deployments on those lines must move to a supported release. After upgrading, a control message that carries a predicate expression or an expression language is rejected unless the new allowPredicateFromMessage option is enabled on the dynamic-router-control endpoint; enable it only when every sender of control messages is trusted. For deployments that cannot upgrade immediately, do not forward messages from untrusted or shared transports to a dynamic-router-control endpoint. Where control messages must cross such a transport, authenticate the sender and make sure the predicate and expression language of each subscription are set by the route rather than taken from the incoming message, for example by removing the CamelDynamicRouterPredicate and CamelDynamicRouterExpressionLanguage headers and clearing the predicate and expressionLanguage fields of a DynamicRouterControlMessage before it reaches the endpoint. Removing optional expression languages from the classpath is not a sufficient workaround. As defence in depth, restrict who can send to the transports that feed the control endpoint, and on 4.23.0 and 4.22.1 set the allowedSchemes option of the dynamic-router endpoint to limit which endpoints a subscription's destinationUri may name.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Camel 4.4.0 ~ 4.18.5 -

II. Public POCs for CVE-2026-83531

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III. Intelligence Information for CVE-2026-83531

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Patches & Fixes for CVE-2026-83531 (4)

Vendor Pages for CVE-2026-83531 (1)

Same Patch Batch · Apache Software Foundation · 2026-10-19 · 62 CVEs total

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CVE-2026-88900 8.8 HIGH Apache Camel: Camel-JGroups: Unsafe Java Deserialization of Cluster Messages in the JGroup
CVE-2026-78165 8.8 HIGH Apache Camel: Camel-Spring-Redis Unfiltered Java Deserialization of Redis Payloads
CVE-2026-80312 8.2 HIGH Apache Camel: Camel-OAuth Authentication Bypass via Fail-Open Processors
CVE-2026-80344 8.2 HIGH Apache Camel: Camel-AS2 Server-Side Request Forgery and Credential Disclosure via Asynchro
CVE-2026-80343 8.2 HIGH Apache Camel: Camel-Netty-HTTP Security Constraint Bypass via Case-Sensitive Context-Path
CVE-2026-78164 8.2 HIGH Apache Camel: HTTP producers resolve property placeholders in message-supplied URI overrid
CVE-2026-88901 8.2 HIGH Apache Camel: Camel-Smooks XML External Entity Processing, external entities resolved by d
CVE-2026-85250 7.5 HIGH Apache Camel: Camel-XPath XML External Entity Processing and File Disclosure via the docum
CVE-2026-85251 7.5 HIGH Apache Camel: Camel-HTTP Credential Disclosure to Cross-Host Redirect Targets
CVE-2026-79983 7.4 HIGH Apache Camel: camel-ftp resolved the remote path of a polled file from the name reported i
CVE-2026-79984 7.4 HIGH Apache Camel: camel-mina-sftp resolved the remote path of a polled file from the name repo
CVE-2026-79985 7.4 HIGH Apache Camel: camel-smb resolved the remote path of a polled file from the name reported i
CVE-2026-79986 7.4 HIGH Apache Camel: camel-azure-files resolved the remote path of a polled file from the name re
CVE-2026-91858 6.5 MEDIUM Apache Camel: Camel-FOP Resolves External DTDs and Entities From Untrusted XSL-FO Input Wh
CVE-2026-84176 6.5 MEDIUM Apache Camel: Camel-Platform-HTTP-Vertx Cross-Origin Credential Exposure via Wildcard Orig
CVE-2026-85249 6.5 MEDIUM Apache Camel: Camel-Tika Header Injection via Unfiltered Document Metadata
CVE-2026-85254 6.5 MEDIUM Apache Camel: Camel-Platform-HTTP Request-Header Echo Suppression Bypassed by Header-Name
CVE-2026-85296 6.5 MEDIUM Apache Camel: Camel-AS2 Cross-Partner Signing Key Confusion via Shared Per-Request State
CVE-2026-85314 6.5 MEDIUM Apache Camel: Camel-Mail Header Injection via Unfiltered mail.smtp Headers in the MimeMult

Showing top 20 of 62 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Apache Camel
Same vendor: Apache Software Foundation
Same weakness: CWE-94

V. Comments for CVE-2026-83531

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