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Highest advisory severityHigh 2 vendors · 2 advisories

CVE-2026-78164

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

CVE-2026-78164: Improper Neutralization of Special Elements Used in a Template Engine and Exposure of Sensitive Information to an Unauthorized Actor…

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

NVD detail CVE.org

CVE-2026-78164 at a glance

CISA KEV
Not listed (catalog checked )
Highest advisory severity
High
CVSS base score
8.2 (Apache), 8.2 (Red Hat)
Weakness
CWE-917
Fixed releases
  • Apache: 4.18.5, 4.22.1, 4.23.0
Vendor advisories
2 from Apache, Red Hat
VulniPulse record
Published · Updated

Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-78164; bulletin-wide values are not repeated here.

Is CVE-2026-78164 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-78164 is not in the CISA KEV catalog (checked ) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-78164?

Upgrade to a fixed release named by the vendor:

  • Apache: 4.18.5, 4.22.1, 4.23.0
  • Users should upgrade to version 4.23.0, which fixes the issue. (Apache)
  • Users on the 4.22.x releases stream should upgrade to 4.22.1. (Apache)

Vendor advisory comparison

Apache

1 advisory
  • Advisory severityHigh8.2

    High [CVE-2026-78164] 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

    CVE-2026-78164Source published Source updated

    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…

    Affected products in this advisory
    • Apache Camel HTTP
    Source-reported affected versions
    • 4.0.0 before 4.18.5
    • 4.19.0 before 4.22.1
    Source-reported fixed versions
    • 4.18.5
    • 4.22.1
    • 4.23.0
    Mitigation guidance
    • 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.
    • 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.

    1 more entries in the full advisory.

    Full advisory and evidenceOpen source bulletin

Red Hat

1 advisory
  • Advisory severityHigh8.2

    High [CVE-2026-78164] information disclosure via improper property placeholder evaluation in HTTP headers

    CVE-2026-78164Source published Source updated

    information disclosure via improper property placeholder evaluation in HTTP headers. Red Hat rates this important (CVSS 8.2). Weakness: CWE-917. Affected products named by the advisory: Red Hat build of Apache Camel 4 for Quarkus 3; Red Hat build of Apache Camel for Spring Boot 4; Red Hat Fuse 7.

    Related products — impact not confirmed
    • Red Hat build of Apache Camel 4 for Quarkus 3
    • Red Hat build of Apache Camel for Spring Boot 4
    • Red Hat Fuse 7
    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    No fixed-version detail extracted. This does not mean no fix exists.
    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

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