VulnerabilityPublished 18 Sep 2026Updated 16 Oct 2026

CVE-2026-93492: Red Hat build of Apache Camel 4 for Quarkus 3 · CWE-1035

Affects Red Hat build of Apache Camel 4 for Quarkus 3Source CVE Database V5

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Not known to be exploited · CVSS 5.3 Medium.

Data as of 2 Nov 2026, 22:58 UTC

CVSS 3.1 base score

5.3Medium

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

EPSS: 0.3% chance of exploitation in 30 days – higher than 31% 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:N/I:N/A:L

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

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: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to 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 build of Apache Camel 4 for Quarkus 3	Affected–	Fixed in–
Red HatRed Hat build of Apache Camel for Spring Boot 4	Affected–	Fixed in–

AI-suggested

A security update is available from Red Hat as part of Red Hat build of Quarkus 3.27.5.SP2. Users should apply this official fix to remediate the vulnerability. Prior to applying this update, ensure all previously released relevant errata have been applied. No additional mitigation steps are indicated by the vendor advisory.

Description

CVE-2026-93492 is a medium severity vulnerability in the Netty HTTP/2 HpackEncoder component used by Red Hat Build of Debezium 3.6. It allows a remote attacker to cause a denial of service by sending HTTP/2 SETTINGS frames with an excessively large MAX_HEADER_TABLE_SIZE, leading to high CPU and memory usage. Red Hat has published an advisory referencing this issue as part of a broader security update for Red Hat build of Quarkus 3.27.5.SP2. The advisory indicates that a security update is available to address this and other vulnerabilities.

Impact

An unauthenticated remote attacker can exploit this vulnerability to cause a denial of service by overwhelming the system's CPU and memory resources. There is no impact on confidentiality or integrity. The CVSS v3.1 base score is 5.3 (medium severity), reflecting network attack vector, low complexity, no privileges required, no user interaction, and impact limited to availability.

Summary

This vulnerability exists in Netty's HTTP/2 HpackEncoder where processing HTTP/2 SETTINGS frames with a very large MAX_HEADER_TABLE_SIZE causes the encoder to store an excessive number of unique headers. This results in increased CPU and memory consumption, leading to a denial of service condition. The issue affects Red Hat Build of Debezium 3.6 as part of the Red Hat build of Quarkus 3.27. The vendor advisory confirms the availability of a security update (3.27.5.SP2) that includes a fix for this vulnerability.

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).

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 20 Oct 2026, 20:27 UTC

WeaknessesCWE-1035

Technical details

References

Community reviews

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