VulnerabilityPublished 18 Sep 2026Updated 15 Oct 2026

CVE-2026-93566: Red Hat AMQ Broker 7 · CWE-1035

Affects Red Hat AMQ Broker 7Source CVE Database V5

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Not known to be exploited · CVSS 6.5 Medium.

Data as of 2 Nov 2026, 22:58 UTC

CVSS 3.1 base score

6.5Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.4% chance of exploitation in 30 days – higher than 41% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: Low
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 18 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Red HatRed Hat Build of Debezium 3.6	Affected–	Fixed in–
Red HatRed Hat build of Quarkus 3.27.5.SP2	Affected–	Fixed in–
Red HatRed Hat build of Quarkus 3.33.3.SP2	Affected–	Fixed in–
Red HatRed Hat AMQ Broker 7	Affected–	Fixed in–
Red HatRed Hat AMQ Clients	Affected–	Fixed in–
Red HatRed Hat build of Apache Camel 4 for Quarkus 3	Affected–	Fixed in–

AI-suggested

Red Hat has released an official security update in Red Hat build of Quarkus 3.27.5.SP2 that addresses CVE-2026-93566. Applying this update is the recommended remediation. Users should ensure all previously released errata relevant to their systems are applied before updating. No additional mitigation steps are indicated by the vendor advisory.

Description

CVE-2026-93566 is a medium severity vulnerability in the Netty HTTP codec used by Red Hat Build of Debezium 3.6. It allows a remote attacker to bypass strict validation by sending a specially crafted HTTP request containing control characters in the chunk-size line, leading to HTTP request smuggling. This can result in information disclosure or unauthorized actions. Red Hat has published an advisory indicating that this issue is addressed in Red Hat build of Quarkus 3.27.5.SP2 with a security update. Users are advised to apply this update to mitigate the vulnerability.

Impact

Exploitation of this vulnerability allows remote attackers to perform HTTP request smuggling by injecting arbitrary HTTP requests. This can lead to information disclosure or unauthorized actions within affected systems. The CVSS v3.1 base score is 6.5 (medium severity), reflecting the network attack vector, low attack complexity, no privileges required, and impacts on confidentiality and integrity but not availability.

Summary

The vulnerability identified as CVE-2026-93566 affects the Netty HTTP codec component used in Red Hat Build of Debezium 3.6. It arises from improper validation of the chunk-size line in HTTP requests, where control characters can be injected to bypass intended strict validation. This flaw enables HTTP request smuggling attacks, which may lead to information disclosure or other unauthorized actions. Red Hat's advisory confirms that the issue is fixed in the Red Hat build of Quarkus version 3.27.5.SP2, which includes multiple security fixes for related components.

CWE-1035OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities (opens in a new tab)
CategoryOWASP Top 10 A03:2025: Software Supply Chain Failures (opens in a new tab)
Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2017.
MITRE does not allow mapping vulnerabilities to this entry; it groups weaknesses rather than naming one.
OWASP Cheat Sheets
OWASP Cheat Sheet Series: Dependency Graph SBOM (opens in a new tab)
OWASP Cheat Sheet Series: Vulnerable Dependency Management (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 17 Oct 2026, 20:15 UTC

WeaknessesCWE-1035

Technical details

References

Community reviews

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