Red Hat Security Advisory: Red Hat build of Quarkus 3.33.3 release and security update
Affects Red HatSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 4.8 Medium.
Data as of 12 Nov 2026, 23:25 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
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 13 Nov 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.
AI-suggested
Red Hat has released an official security update in version 3.27.5 of the Red Hat build of Quarkus that addresses these vulnerabilities. Users should apply this update after ensuring all previously released errata relevant to their system have been applied. Refer to Red Hat's official guidance at https://access.redhat.com/articles/11258 for update instructions.
Description
Red Hat has released an important security update for Red Hat build of Quarkus version 3.27.5 addressing multiple vulnerabilities. These include a heap buffer overflow in Jansi causing denial of service, authentication downgrade attacks via SCRAM libraries, man-in-the-middle protection bypass in PostgreSQL JDBC, and unauthorized command execution in Apache MINA SSHD due to improper certificate validation. The update fixes these issues to improve security.
References
- access.redhat.com/errata/RHSA-2026:51653 (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=3.33.3 (opens in a new tab)
- docs.redhat.com/en/documentation/red_hat_build_of_quarkus/3.33 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-7792 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-7793 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-7794 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-7800 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-7871 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8062 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8064 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8065 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8066 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8067 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8068 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8069 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8070 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8071 (opens in a new tab)
- issues.redhat.com/browse/QUARKUS-8072 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:53643 (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)