nghttp2
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- Software application
- Total vulnerabilities (90 days)
- 0
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As of 10/22/2026, nghttp2 recorded 0 security vulnerabilities in the last 90 days, of which 0 are rated High or Critical. None of these vulnerabilities is actively exploited (KEV) according to CISA's catalog. CyStack recommends that organizations and individual users apply patches as soon as possible.
CyStack does not yet have sufficient official-source data to identify the latest version of nghttp2 and determine which vulnerabilities affect that version.
CyStack VulnScan continuously discovers assets, validates vulnerabilities, and helps security teams prioritize remediation across the organization.
CVE-2026-58055nghttp2 nghttpx - HTTP Request/Response Smuggling via Upgrade Request with Content-LengthCVE-2026-27135nghttp2 Denial of service: Assertion failure due to the missing state validationCVE-2024-28182Reading unbounded number of HTTP/2 CONTINUATION frames to cause excessive CPU usageCVE-2023-44487CVE-2023-44487CVE-2023-35945Envoy vulnerable to HTTP/2 memory leak in nghttp2 codec| Vulnerability | Exploitation status | Fix | Published | Severity |
|---|---|---|---|---|
CVE-2026-58055nghttp2 nghttpx - HTTP Request/Response Smuggling via Upgrade Request with Content-Length | Exploitation statusActively exploited | FixYes | Published06/28/2026 | SeverityMedium |
CVE-2026-27135nghttp2 Denial of service: Assertion failure due to the missing state validation | Exploitation statusNot exploited | FixNo | Published03/18/2026 | SeverityHigh |
CVE-2024-28182Reading unbounded number of HTTP/2 CONTINUATION frames to cause excessive CPU usage | Exploitation statusNot exploited | FixNo | Published04/04/2024 | SeverityMedium |
CVE-2023-44487CVE-2023-44487 | Exploitation statusKEV | FixNo | Published10/10/2023 | SeverityHigh |
CVE-2023-35945Envoy vulnerable to HTTP/2 memory leak in nghttp2 codec | Exploitation statusActively exploited | FixYes | Published07/13/2023 | SeverityHigh |
CVE-2020-11080Denial of service in nghttp2 | Exploitation statusNot exploited | FixNo | Published06/03/2020 | SeverityLow |
CVE-2016-1544CVE-2016-1544 | Exploitation statusNot confirmed | FixNo | Published02/06/2020 | SeverityUnknown |
CVE-2018-1000168CVE-2018-1000168 | Exploitation statusNot exploited | FixNo | Published05/08/2018 | SeverityHigh |
CVE-2015-8659CVE-2015-8659 | Exploitation statusNot confirmed | FixNo | Published01/12/2016 | SeverityUnknown |
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