CVE-2026-8746: Use After Free in Open5GS
CVE-2026-8746 is a use-after-free vulnerability in Open5GS versions up to 2. 7. 7, specifically in the discover_handler function within the NRF component's /lib/sbi/nghttp2-server. c library. This flaw can be exploited remotely without user interaction or privileges. The vulnerability has a medium severity rating with a CVSS score of 5. 3. Although the issue was reported early to the Open5GS project, no official response or patch has been provided yet. Public exploit code is available, increasing the risk of potential attacks. No cloud service is involved, and no vendor advisory or patch information is currently available.
AI Analysis
Technical Summary
Open5GS up to version 2.7.7 contains a use-after-free vulnerability in the discover_handler function of the NRF component, located in /lib/sbi/nghttp2-server.c. This vulnerability allows remote attackers to exploit memory management flaws, potentially leading to undefined behavior or crashes. The vulnerability requires no user interaction and can be triggered remotely. Despite early notification to the project maintainers, no official remediation or patch has been released. Public exploit code exists, but there are no confirmed reports of exploitation in the wild. The CVSS 4.0 base score is 5.3, indicating medium severity.
Potential Impact
Successful exploitation of this use-after-free vulnerability could lead to memory corruption, potentially causing application crashes or other unintended behavior in the Open5GS NRF component. Given the medium CVSS score and the availability of public exploit code, there is a moderate risk of exploitation. However, there are no confirmed reports of active exploitation in the wild at this time.
Mitigation Recommendations
No official patch or remediation is currently available from the Open5GS project. Users should monitor the project’s communications for updates and consider implementing network-level protections to limit exposure of the vulnerable NRF service until a fix is released. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
CVE-2026-8746: Use After Free in Open5GS
Description
CVE-2026-8746 is a use-after-free vulnerability in Open5GS versions up to 2. 7. 7, specifically in the discover_handler function within the NRF component's /lib/sbi/nghttp2-server. c library. This flaw can be exploited remotely without user interaction or privileges. The vulnerability has a medium severity rating with a CVSS score of 5. 3. Although the issue was reported early to the Open5GS project, no official response or patch has been provided yet. Public exploit code is available, increasing the risk of potential attacks. No cloud service is involved, and no vendor advisory or patch information is currently available.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Open5GS up to version 2.7.7 contains a use-after-free vulnerability in the discover_handler function of the NRF component, located in /lib/sbi/nghttp2-server.c. This vulnerability allows remote attackers to exploit memory management flaws, potentially leading to undefined behavior or crashes. The vulnerability requires no user interaction and can be triggered remotely. Despite early notification to the project maintainers, no official remediation or patch has been released. Public exploit code exists, but there are no confirmed reports of exploitation in the wild. The CVSS 4.0 base score is 5.3, indicating medium severity.
Potential Impact
Successful exploitation of this use-after-free vulnerability could lead to memory corruption, potentially causing application crashes or other unintended behavior in the Open5GS NRF component. Given the medium CVSS score and the availability of public exploit code, there is a moderate risk of exploitation. However, there are no confirmed reports of active exploitation in the wild at this time.
Mitigation Recommendations
No official patch or remediation is currently available from the Open5GS project. Users should monitor the project’s communications for updates and consider implementing network-level protections to limit exposure of the vulnerable NRF service until a fix is released. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-05-16T12:38:45.771Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a099dbaec166c07b0bb5c40
Added to database: 5/17/2026, 10:51:38 AM
Last enriched: 5/17/2026, 11:06:42 AM
Last updated: 5/17/2026, 12:02:33 PM
Views: 6
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