nghttp2 before 1.7.1 allows remote attackers to cause a denial of service (memory exhaustion).
Priority LOW 18CWE-400Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-400.
Summary
nghttp2 before 1.7.1 allows remote attackers to cause a denial of service (memory exhaustion).
Why it matters now
EPSS 0.00886 59th percentileScored 2026-11-07
Fix Fixed nghttp2 (nghttp2): 1.7.1
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| nghttp2 | nghttp2 | before 1.7.1 | 1.7.1 | Patch available | CNA |
- nghttp2 Vendornghttp2 Affected before 1.7.1 Fixed in 1.7.1 Patch available CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:nghttp2:nghttp2:*:*:*:*:*:*:*:* | before 1.7.1 | Vulnerable | nghttp2 |
| cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* | 22 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* | 23 | Vulnerable | Fedoraproject |
- cpe:2.3:a:nghttp2:nghttp2:*:*:*:*:*:*:*:* Versions before 1.7.1 Vulnerable ·nghttp2
- cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* Versions 22 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* Versions 23 Vulnerable ·Fedoraproject
Remediation
- Fix · CNA nghttp2 (nghttp2) Fixed in 1.7.1
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
Not affected: 1 product
- Red Hat Software Collections
Timeline
- 2026-10-02 Threatist record created from CVE-2016-1544
- 2026-10-03 Alias added: GHSA-32wx-5655-89rw
References
Patch 3
More Nghttp2 vulnerabilities
- TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
- TI-2023-18006 Envoy vulnerable to HTTP/2 memory leak in nghttp2 codec CVSS 3.1HIGH 7.5
- TI-2024-18758 Reading unbounded number of HTTP/2 CONTINUATION frames to cause excessive CPU usage CVSS 3.1MEDIUM 5.3
- TI-2018-15818 nghttp2 version >= 1.10.0 and nghttp2 <= v1.31.0 contains an Improper Input Validation… CVSS 3.1HIGH 7.5
- TI-2015-07121 The idle stream handling in nghttp2 before 1.6.0 allows attackers to have unspecified… CVSS 3.0CRITICAL 10.0
- TI-2020-08954 Denial of service in nghttp2 CVSS 3.1HIGH 7.5
Sources
- CVE-2016-1544 · CVE Program
- CVE-2016-1544 · NVD
- FIRST EPSS
- GHSA-32wx-5655-89rw · GitHub Advisory Database · CC BY 4.0
- CVE-2016-1544 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences