CVE-2026-59173
A remote, anonymous attacker can exploit a vulnerability in various HTTP/2 server implementations such as the Apache Traffic Server to conduct a Denial of Service attack.
CSIRTS triage
- What
- A vulnerability in HTTP/2 server implementations can lead to Denial of Service attacks.
- Who is affected
- Users of various HTTP/2 server implementations are affected.
- Urgency
- Remediation is necessary to prevent potential Denial of Service attacks.
- Action
- Apply patches or mitigations for the affected HTTP/2 server implementations.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch CVE-2026-59173
Get an email if CVE-2026-59173 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.
Exploitation outlook
- Low exploitation risk0.51% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 40% of all EPSS-scored CVEs.
Advisory coverage (2)
- medium[NEW] [medium] HTTP/2 Server: Vulnerability allows Denial of Servicecert-bund · 2026-07-20
- highCVE-2026-59173: Uncontrolled Resource Consumption vulnerability in Apache Traffic Server. This issue affects A…nvd · 2026-07-18
External references
Embed the live status
— this badge updates automatically when the KEV or exploit status changes. How to embed it →
[](https://www.csirts.com/cve/CVE-2026-59173)