Red Hat Security Advisory: Red Hat build of Quarkus 3.27.5 release and security update
Affects Red HatSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 4.8 Medium.
Data as of 29 Oct 2026, 22:46 UTC
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 16 Jun 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 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| FuseSourcejansi | Affected
| Fixed in– |
MavenFuseSource/org.fusesource.jansi:jansipkg:maven/FuseSource/org.fusesource.jansi:jansiOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
This release of Red Hat build of Quarkus 3.27.5 includes the following CVE fixes: * scram-common: SCRAM Libraries: Authentication downgrade via TLS man-in-the-middle attack [quarkus-3.27] (CVE-2026-53712) * jansi: Jansi: Heap buffer overflow leads to Denial of Service [quarkus-3.27] (CVE-2026-8484) * postgresql: pgjdbc: Man-in-the-middle protection bypass via SCRAM-SHA-256-PLUS downgrade [quarkus-3.27] (CVE-2026-54291) * sshd-core: Apache MINA SSHD: Unauthorized command execution due to improper certificate validation [quarkus-3.27] (CVE-2026-56624) For more information, see the release notes page listed in the References section.
References
- access.redhat.com/errata/RHSA-2026:53643 (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=3.27.5 (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-7957 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8319 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8320 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8321 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8322 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8323 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8324 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8325 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8326 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8327 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8328 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8329 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8330 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8429 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8430 (opens in a new tab)