[UPDATE] [medium] Red Hat Enterprise Linux (Quarkus): Multiple vulnerabilities
A remote, authenticated or anonymous attacker can exploit multiple vulnerabilities in Red Hat Enterprise Linux to conduct a cross-site scripting attack, cause a denial-of-service condition, or disclose confidential information.
CSIRTS triage
- What
- Multiple vulnerabilities can allow a remote attacker to conduct cross-site scripting attacks, cause denial-of-service, or disclose confidential information.
- Who is affected
- Deployments of Red Hat Enterprise Linux with Quarkus are affected.
- Urgency
- Remediation is medium urgency due to the potential impact of the vulnerabilities.
- Action
- Update to the latest version of Red Hat Enterprise Linux (Quarkus) to address these issues.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0019
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2025-119660.27% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 19% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2025-121830.70% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 50% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2025-665660.61% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 47% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2025-11966 | coverage & exploitation status | NVD · CVE.org |
| CVE-2025-12183 | coverage & exploitation status | NVD · CVE.org |
| CVE-2025-66566 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
Recent advisories for Red Hat Enterprise
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
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