CVE-2026-46584Public exploitNetwork attack vector

Credential and message exposure via header override

Published Jul 6, 2026 · Updated Jul 6, 2026

Improper input validation in Apache Camel Mail allows remote attackers to expose SMTP credentials or outgoing messages. MailProducer.getSender copies untrusted mail.smtp and mail.smtps namespace headers into per-message JavaMail session properties, overriding endpoint settings. Exploitation requires a route that passes untrusted headers to an SMTP producer; releases earlier than 4.19.0 permit SMTP redirection and credential disclosure, while later affected releases permit transport weakening and message interception.

CVSS severity3.7
Low
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Apache Camel Mail allows remote attackers to expose SMTP credentials or outgoing messages. MailProducer.getSender copies untrusted mail.smtp and mail.smtps namespace headers into per-message JavaMail session properties, overriding endpoint settings. Exploitation requires a route that passes untrusted headers to an SMTP producer; releases earlier than 4.19.0 permit SMTP redirection and credential disclosure, while later affected releases permit transport weakening and message interception.

The record

CVE
CVE-2026-46584
Published
Jul 6, 2026
Updated
Jul 6, 2026
Vendor
The Apache Software Foundation
Product
Apache Camel Mail
Classifications
CWE-20, CWE-200, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=4.0.0 <4.14.8
  2. Affected versionversion=4.15.0 <4.18.3
  3. Affected versionversion=4.19.0 <r

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Camel Mailversion=4.0.0 <4.14.8; version=4.15.0 <4.18.3; version=4.19.0 <r

Published CVSS scores

3.7CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-20Improper Input Validation
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1557Adversary-in-the-Middle

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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