Red Hat Security Advisory: Red Hat build of Quarkus 3.27.3.SP1 security update
Affects Red HatSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 9.3 Critical · fixed in Red Hat package updates : patch Red Hat bcprov as a priority.
Data as of 30 Oct 2026, 02:19 UTC
- Patch
- Available – fixed in 1.84, 1.81.1, 1.80.2
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/RE:M/U:RedExploitation evidence
Disclosed: evidence found.
CVE published 15 Apr 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
Upgrade BC-JAVA and bcprov and org.bouncycastle/bcprov-jdk15on to 1.84, 1.81.1 or 1.80.2.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Legion of the Bouncy Castle Inc.BC-JAVA | Affected
| Fixed in
|
| Legion of the Bouncy Castle Inc.BC-JAVA | Affected
| Fixed in
|
| Legion of the Bouncy Castle Inc.BC-JAVA | Affected
| Fixed in
|
GitHubbcprovpkg:github/bcprovOther threats | Affected
| Fixed in
|
Mavenorg.bouncycastle/bcprov-jdk15onpkg:maven/org.bouncycastle/bcprov-jdk15onOther 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 updated version, Red Hat build of Quarkus 3.27.3.SP1, which includes fixes for all listed vulnerabilities. Users should apply this update after ensuring all previously released relevant errata are installed. Detailed update instructions are available from Red Hat's official documentation. No additional mitigation steps are indicated beyond applying the official update.
Description
Red Hat has released a security update for its build of Quarkus 3.27.3.SP1 addressing multiple vulnerabilities including authorization bypass, LDAP injection, signature verification flaws, cryptographic processing errors, and race conditions in Kafka clients. These issues affect various components such as quarkus-vertx-http, bcprov-jdk18on, bcpkix-jdk18on, and kafka-clients. The update is rated as important by Red Hat Product Security.
References
- access.redhat.com/errata/RHSA-2026:11721 (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.SP1 (opens in a new tab)
- docs.redhat.com/en/documentation/red_hat_build_of_quarkus/3.27 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_11721.json (opens in a new tab)