Apache Camel: Camel-Platform-HTTP Request-Header Echo Suppression Bypassed by Header-Name Casing
CVSS score
6.5
EPSS probability
—
Risk score
0.7
Published
12 h ago
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Vulnerability description
CVE AI research
DayBreach AI Explanation
Verified against sourcesSources read
1
Source agreement
Tam uyum
Evidence confidence
%55
Short explanation
The CVE-2026-85254 vulnerability in the Apache Camel Platform HTTP component causes request headers to be reflected in responses due to case-sensitive comparisons.
This vulnerability allows attackers to perform response-splitting and cache-poisoning style attacks, compromising the security of components sitting in front of the endpoint.
What should be done?
- Upgrade to Apache Camel versions 4.18.5, 4.22.1, or 4.23.0
- Strip the headers in question in front of the Camel endpoint
- Remove headers from the response in the route instead of relying on built-in suppression
Chain of evidence and sources
CVE-2026-85254 zafiyeti, Apache Camel Platform HTTP bileşenindeki büyük/küçük harf duyarlılığı işleme hatalarından kaynaklanmaktadır.
HTTP/2 protokolü başlık adlarının küçük harfle yazılmasını zorunlu kıldığı için koruma mekanizması işlevsiz kalmaktadır.
Show the technical text from the sources
Improper Handling of Case Sensitivity vulnerability in Apache Camel Platform HTTP component. This issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1. The guard that prevents a request header being reflected into the response compared header names case sensitively, while HTTP header names are case insensitive. A caller could therefore defeat the suppression simply by varying the case of the header name. HTTP/2 makes the problem unconditional rather than optional: the protocol requires header names to be lowercase on the wire, so the comparison never matched and the suppression was inert for every request on an HTTP/2 connection. The consequence is that content the caller chose is echoed back in the response, which is the basis for response-splitting and cache-poisoning style attacks against whatever sits in front of the Camel endpoint. Upgrade to Apache Camel 4.23.0, which fixes the issue. Users on the 4.18.x LTS releases stream should upgrade to 4.18.5. Users on the 4.22.x LTS releases stream should upgrade to 4.22.1. Request header names are now compared case insensitively, so the suppression holds regardless of casing and works under HTTP/2. For deployments that cannot upgrade immediately, strip the headers in question in front of the Camel endpoint, or remove them from the response in the route rather than relying on the built-in suppression.
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE: CWE-178
Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-85254 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | Apache Software Foundation | Apache Camel | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 6.5 | CVSS V31 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N | NVD |
| 6.5 | CVSS V3_1 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N | CVE CNA |
Patch and Remediation Guide
Solution & Remediation Advisory
6 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.
Backport to camel-4.22.x, released in 4.22.1 (commit 260989268cbc6d258b1fcba63770be8ebbec40cb)
Open sourceBackport to camel-4.18.x, released in 4.18.5 (commit af1efbcccf5882b1ef0094db718972da3190e7e9)
Open sourceFix on main, released in 4.23.0 (commit 126c79bdf3f171184461f987c143b5a818df4d81)
Open sourceBackport to camel-4.22.x, released in 4.22.1 (commit 260989268cbc6d258b1fcba63770be8ebbec40cb)
Open sourceBackport to camel-4.18.x, released in 4.18.5 (commit af1efbcccf5882b1ef0094db718972da3190e7e9)
Open sourcePublic exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-85254 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-85254 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
CVSS Vector Radar Chart
6.5 / 10Vulnerability Scoring Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NYama doğrulandı
Weakness Type (CWE & CAPEC)
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