CVE-2026-48203Public exploitNetwork attack vector

SSRF and field injection via unfiltered headers

Published Jul 6, 2026 · Updated Jul 6, 2026

Header injection in affected Apache Camel 4.x Solr components allows remote attackers to trigger SSRF and alter indexed document fields. SolrProducer accepts SolrParam.* and SolrField.* Exchange headers after HttpHeaderFilterStrategy fails to remove their non-Camel-prefixed names. Exposure requires an HTTP consumer to feed untrusted headers into a Solr producer; unauthenticated routes expose internal HTTP targets and indexed-document integrity.

CVSS severity9.1
Critical
EPSS probability0.60%
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 affected Apache Camel 4.x Solr components allows remote attackers to trigger SSRF and alter indexed document fields. SolrProducer accepts SolrParam.* and SolrField.* Exchange headers after HttpHeaderFilterStrategy fails to remove their non-Camel-prefixed names. Exposure requires an HTTP consumer to feed untrusted headers into a Solr producer; unauthenticated routes expose internal HTTP targets and indexed-document integrity.

The record

CVE
CVE-2026-48203
Published
Jul 6, 2026
Updated
Jul 6, 2026
Vendor
The Apache Software Foundation
Product
Apache Camel
Classifications
CWE-918, CWE-20, CWE-74, T1190, T1565.001
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

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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=4.0.0 <4.14.8
  2. Affected versionversion=4.15.0 <4.18.3
  3. Affected versionversion=4.19.0 <4.21.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Camelversion=4.0.0 <4.14.8; version=4.15.0 <4.18.3; version=4.19.0 <4.21.0

Published CVSS scores

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-918Server-Side Request Forgery (SSRF)
CWE-20Improper Input Validation
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1190Exploit Public-Facing Application
T1565.001Stored Data Manipulation

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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