Red Hat Security Advisory: Red Hat build of Quarkus 3.27.3.SP2 security update
Affects Red HatSource GCVE Database
Not known to be exploited.
Data as of 6 Nov 2026, 02:06 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
Exploitation evidence
Disclosed: evidence found.
CVE published 20 May 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 5 Nov 2026.
What to do
AI-suggested
Red Hat has released an update in Quarkus version 3.27.3.SP2 that fixes this vulnerability. Users should apply this update after ensuring all previous relevant errata have been applied. Detailed update instructions are available from Red Hat's official documentation.
Description
A security update for Red Hat build of Quarkus 3.27.3.SP2 addresses CVE-2026-42198, a client-side denial of service vulnerability in the pgjdbc component via malicious SCRAM-SHA-256 authentication. This vulnerability could allow an attacker to disrupt client operations. The update includes a fix for this issue.
References
- access.redhat.com/errata/RHSA-2026:19098 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- access.redhat.com/products/quarkus/ (opens in a new tab)
- access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=redhat.quarkus&downloadType=distributions&version=3.27.3.SP2 (opens in a new tab)
- docs.redhat.com/en/documentation/red_hat_build_of_quarkus/3.27 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-7768 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_19098.json (opens in a new tab)