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CVE-2026-78164— Apache Camel: HTTP producers resolve property placeholders in message-supplied URI override headers

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 的 HTTP、Netty HTTP、Undertow 和 Vert.x HTTP 组件中存在“模板引擎中特殊元素未正确中和”以及“敏感信息暴露给未授权实体”的漏洞。 受影响版本： Apache Camel 4.0.0 至 4.18.4（含） Apache Camel 4.19.0 至 4.22.0（含） 漏洞详情： Camel HTTP 生产者系列组件允许入站消息通过 和 消息头覆盖目标端点 URI，随后将该由消息提供的字符串传入 进行处理，再用于构建请求。然而，属性占位符解析机制本质上是

CVSS 8.2 · High

Affected Version Matrix 25

VendorProduct Version RangeStatus
Apache Software Foundation Apache Camel 4.0.0< 4.18.5 affected
4.19.0< 4.22.1 affected
4.18.5 unaffected
4.22.1 unaffected
4.23.0 unaffected
4.15.0< 4.18.5 affected
4.19.0< 4.22.1 affected
4.18.5 unaffected
… +17 more rows
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I. Basic Information for CVE-2026-78164

Vulnerability Information
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Vulnerability Title
Apache Camel: HTTP producers resolve property placeholders in message-supplied URI override headers
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Neutralization of Special Elements Used in a Template Engine and Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Camel HTTP, Netty HTTP, Undertow and Vert.x HTTP components. This issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1. The Camel HTTP producer families let an inbound message override the endpoint URI through the CamelHttpUri and CamelRestHttpUri headers, and then passed that message-supplied string through CamelContext.resolvePropertyPlaceholders() before using it. Property-placeholder resolution is a configuration-resolution facility, not a URI-parsing step: it reaches operating-system environment variables, JVM system properties, every PropertiesFunction registered on the classpath - including the secret functions - and, through camel-bean, the invocation of a no-argument method on any bean in the registry. Applying it to Exchange content therefore turned a URI string into a configuration- and bean-evaluation context. A route author opted into none of this: a plain static to("http://backend/api") was sufficient. Seven call sites were affected: HttpHelper.createURL and HttpHelper.createMethod in camel-http-common, HttpMethodHelper.createMethod in camel-http, VertxHttpHelper.resolveHttpURI in camel-vertx-http, UndertowHelper.createURL and UndertowHelper.createMethod in camel-undertow, and NettyHttpHelper.createURL in camel-netty-http. The bridgeEndpoint option did not bound the exposure: it suppresses the CamelHttpUri override in the createURL family but not in the createMethod family, so a route using the documented bridging configuration still resolved placeholders taken from the header, and CamelRestHttpUri was consumed before any bridgeEndpoint check in all four components. Only camel-http offered an opt-out, skipControlHeaders, which defaults to false. Reaching the headers did not always require header injection, because several Camel HTTP consumers populate CamelHttpUri from the request line themselves as a documented reverse-proxy feature. An unresolvable placeholder additionally produced a RuntimeExchangeException whose message echoed the URI, which distinguishes a set from an unset configuration key even where no outbound request is made. The behaviour predates the 4.x line. This advisory continues the alignment CAMEL-24282 applied to the toD and enrich dynamic-URI EIPs in 4.22.0, extending the same build-time-resolution contract to the HTTP producer components. Users should upgrade to version 4.23.0, which fixes the issue. Users on the 4.22.x releases stream should upgrade to 4.22.1. Users on the 4.18.x releases stream should 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. For deployments that cannot upgrade immediately, strip the override headers at the trust boundary before the producer with removeHeader("CamelHttpUri") and removeHeader("CamelRestHttpUri"), or set skipControlHeaders=true on camel-http endpoints, which is the only component offering that option. Note that bridgeEndpoint=true is not a workaround: it suppresses the header override when the outbound URL is built but not when the header is re-parsed for the query string. Percent-encoding the placeholder delimiters is likewise not a mitigation for camel-netty-http, whose binding decodes the request path before the value reaches the header, so proxy or WAF rules written against the raw delimiters do not help there. As defence in depth, ensure consumers exposed to untrusted senders apply a strict inbound HeaderFilterStrategy over the Camel namespace, and resolve secrets through a vault rather than through environment variables or system properties that a placeholder can name.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1336
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Camel 4.0.0 ~ 4.18.5 -
Apache Software Foundation Apache Camel 4.15.0 ~ 4.18.5 -
Apache Software Foundation Apache Camel 4.15.0 ~ 4.18.5 -
Apache Software Foundation Apache Camel 4.15.0 ~ 4.18.5 -
Apache Software Foundation Apache Camel 4.15.0 ~ 4.18.5 -

II. Public POCs for CVE-2026-78164

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III. Intelligence Information for CVE-2026-78164

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Patches & Fixes for CVE-2026-78164 (4)

Other References for CVE-2026-78164 (1)

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

CVE-2026-78162 10.0 CRITICAL Apache Camel: Camel-Hazelcast Managed Instances Missing Java Deserialization Filter (Incom
CVE-2026-88900 8.8 HIGH Apache Camel: Camel-JGroups: Unsafe Java Deserialization of Cluster Messages in the JGroup
CVE-2026-83531 8.8 HIGH Apache Camel: Camel-Dynamic-Router Control Endpoint Compiles Predicate Expressions Supplie
CVE-2026-78165 8.8 HIGH Apache Camel: Camel-Spring-Redis Unfiltered Java Deserialization of Redis Payloads
CVE-2026-80343 8.2 HIGH Apache Camel: Camel-Netty-HTTP Security Constraint Bypass via Case-Sensitive Context-Path
CVE-2026-80344 8.2 HIGH Apache Camel: Camel-AS2 Server-Side Request Forgery and Credential Disclosure via Asynchro
CVE-2026-80312 8.2 HIGH Apache Camel: Camel-OAuth Authentication Bypass via Fail-Open Processors
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-2026-79985 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-2026-79984 7.4 HIGH Apache Camel: camel-mina-sftp resolved the remote path of a polled file from the name repo
CVE-2026-79983 7.4 HIGH Apache Camel: camel-ftp resolved the remote path of a polled file from the name reported i
CVE-2026-91858 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 &rarr; →

IV. Related Vulnerabilities

Same product: Apache Camel
Same vendor: Apache Software Foundation
Same weakness: CWE-1336

V. Comments for CVE-2026-78164

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