--- title: "CVE-2026-105297: Pingora - Denial of Service" description: "Pingora before 0.8.1 contains a denial of service caused by lack of limits on decoded header-list size and concurrent streams in HTTP/2 server, letting remote unauthenticated clients exhaust memory by sending crafted HPACK references, exploit requires no authentication." url: https://panop.io/threat-heartbeat/CVE-2026-105297/ --- # CVE-2026-105297 Pingora - Denial of Service Pingora before 0.8.1 contains a denial of service caused by lack of limits on decoded header-list size and concurrent streams in HTTP/2 server, letting remote unauthenticated clients exhaust memory by sending crafted HPACK references, exploit requires no authentication. CVSS base score 7.5 /10 High CISA KEV Not listed Public exploit None known Authentication Not required [View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-105297) ## Details Type Denial of Service Impact Denial Of Service CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Published 20 October 2026 Updated 20 October 2026 Weakness [CWE-770](https://cwe.mitre.org/data/definitions/770.html) ## Vendor fix Upgrade to Pingora version 0.8.1 or later and configure max\_header\_list\_size and max\_concurrent\_streams limits. Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them. ## References - [https://nvd.nist.gov/vuln/detail/CVE-2026-105297](https://nvd.nist.gov/vuln/detail/CVE-2026-105297) - [https://github.com/cloudflare/pingora](https://github.com/cloudflare/pingora) [← All CVEs](https://panop.io/threat-heartbeat/) ## What this record can't tell you - Whether you run the affected software, and where - Whether an attacker can actually reach and exploit it - The misconfigurations that never get a CVE number - What it would cost the business, ranked into what to fix first Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)