CVE-2026-45409
A remote, anonymous attacker can exploit a vulnerability in Red Hat Enterprise Linux (python-idna) to conduct a denial of service attack.
CSIRTS triage
- What
- A denial of service vulnerability allows remote anonymous attackers to disrupt service availability.
- Who is affected
- All deployments of python-idna in Red Hat Enterprise Linux are affected.
- Urgency
- Medium priority; not currently exploited but denials of service can impact availability.
- Action
- Update python-idna to a patched version when available from Red Hat.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.41% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 34% of all EPSS-scored CVEs.
Advisory coverage (6)
- medium[NEW] [medium] Red Hat Enterprise Linux (python-idna): Vulnerability Enables Denial of Servicecert-bund · 2026-08-19
- unknownexploitedMultiple vulnerabilities in IBM products (August 14, 2026)cert-fr-avis · 2026-08-14
- unknownMultiple vulnerabilities in IBM products (July 24, 2026)cert-fr-avis · 2026-07-24
- unknownMultiple vulnerabilities in IBM products (July 17, 2026)cert-fr-avis · 2026-07-17
- unknownUSN-8549-1: idna vulnerabilityubuntu · 2026-07-15
- mediumGHSA-65pc-fj4g-8rjx: Internationalized Domain Names in Applications (IDNA): Specially crafted inputs to idna.e…ghsa · 2026-05-19
External references
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