CVE-2026-33453Public exploitNetwork attack vector

Unauthenticated command execution via CoAP header injection

Published Apr 27, 2026 · Updated Apr 27, 2026

Header injection in Apache Camel camel-coap 4.14.0 through 4.14.5, 4.18.0, and 4.19.0 allows remote attackers to execute OS commands via CoAP. CamelCoapResource.handleRequest() copies URI query parameters into Exchange headers without a HeaderFilterStrategy, allowing CamelExecCommandExecutable and CamelExecCommandArgs to override configured values. Exploitation requires a reachable CoAP consumer that forwards the Exchange to a header-sensitive producer; command output can return in the CoAP response.

CVSS severity10.0
Critical
EPSS probability6.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Header injection in Apache Camel camel-coap 4.14.0 through 4.14.5, 4.18.0, and 4.19.0 allows remote attackers to execute OS commands via CoAP. CamelCoapResource.handleRequest() copies URI query parameters into Exchange headers without a HeaderFilterStrategy, allowing CamelExecCommandExecutable and CamelExecCommandArgs to override configured values. Exploitation requires a reachable CoAP consumer that forwards the Exchange to a header-sensitive producer; command output can return in the CoAP response.

The record

CVE
CVE-2026-33453
Published
Apr 27, 2026
Updated
Apr 27, 2026
Vendor
The Apache Software Foundation
Product
Apache Camel
Classifications
CWE-915, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.14.0 <=4.14.5
  2. Affected versionversion=4.18.0 <4.18.1
  3. Affected versionversion=4.19.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Camelversion=4.14.0 <=4.14.5; version=4.18.0 <4.18.1; version=4.19.0

Published CVSS scores

8.1Red HatCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-915Improperly Controlled Modification of Dynamically-Determined Object Attributes
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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