NGINX HTTP/3 QUIC vulnerability (CVE-2024-34161)
CVE-2024-34161 is a medium severity vulnerability in NGINX Plus and NGINX OSS when configured with the HTTP/3 QUIC module. It occurs if the network infrastructure supports an MTU of 4096 bytes or greater without fragmentation. Under these conditions, certain QUIC packets can cause NGINX worker processes to leak previously freed memory. This issue affects NGINX versions from 1.25.0 up to but not including 1.26.1. A patch is available to address this vulnerability.
AI Analysis
Technical Summary
The vulnerability CVE-2024-34161 affects NGINX Plus and NGINX OSS configured to use the HTTP/3 QUIC module. When the network MTU is 4096 or greater without fragmentation, undisclosed QUIC packets can trigger a memory leak by causing NGINX worker processes to leak previously freed memory. This could potentially lead to resource exhaustion or other memory-related issues. The affected versions are >=1.25.0 and <1.26.1. A patch is available to fix this issue.
Potential Impact
The vulnerability causes NGINX worker processes to leak previously freed memory when processing certain QUIC packets under specific network MTU conditions. This memory leak could degrade server performance or stability over time but no active exploits are known in the wild.
Mitigation Recommendations
A patch is available for this vulnerability. Users should upgrade NGINX to version 1.26.1 or later to remediate the issue. No additional mitigation steps are indicated.
NGINX HTTP/3 QUIC vulnerability (CVE-2024-34161)
Description
CVE-2024-34161 is a medium severity vulnerability in NGINX Plus and NGINX OSS when configured with the HTTP/3 QUIC module. It occurs if the network infrastructure supports an MTU of 4096 bytes or greater without fragmentation. Under these conditions, certain QUIC packets can cause NGINX worker processes to leak previously freed memory. This issue affects NGINX versions from 1.25.0 up to but not including 1.26.1. A patch is available to address this vulnerability.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2024-34161 affects NGINX Plus and NGINX OSS configured to use the HTTP/3 QUIC module. When the network MTU is 4096 or greater without fragmentation, undisclosed QUIC packets can trigger a memory leak by causing NGINX worker processes to leak previously freed memory. This could potentially lead to resource exhaustion or other memory-related issues. The affected versions are >=1.25.0 and <1.26.1. A patch is available to fix this issue.
Potential Impact
The vulnerability causes NGINX worker processes to leak previously freed memory when processing certain QUIC packets under specific network MTU conditions. This memory leak could degrade server performance or stability over time but no active exploits are known in the wild.
Mitigation Recommendations
A patch is available for this vulnerability. Users should upgrade NGINX to version 1.26.1 or later to remediate the issue. No additional mitigation steps are indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- BIT-nginx-2024-34161
- Osv Schema Version
- 1.5.0
- Aliases
- ["CVE-2024-34161"]
- Ecosystems
- ["Bitnami"]
- Database Specific Severity
- Medium
Threat ID: 6aa005ffacd9273b49ab6957
Added to database: 09/08/2026, 12:56:31 UTC
Last enriched: 09/08/2026, 13:38:41 UTC
Last updated: 09/10/2026, 19:36:48 UTC
Views: 12
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