PT-2026-39332 · Open5Gs · Open5Gs

0Wln3D · Published 2026-05-09 · Updated 2026-05-11 · CVE-2026-8187

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Open5GS versions prior to 2.7.8

Description A flaw in the User Plane Function (UPF) component allows a remote attacker to cause resource consumption. This issue occurs within the gtpv1 u recv cb() function located in the src/upf/gtp-path.c file.

Recommendations Update to a version later than 2.7.7. As a temporary workaround, restrict access to the gtpv1 u recv cb() function to minimize the risk of exploitation.

Exploit

Fix

Resource Exhaustion

Improper Resource Release

Weakness Enumeration

CWE-400

CWE-404

Related Identifiers

CVE-2026-8187

Affected Products

Open5Gs

References · 11

• 🔥 https://github.com/open5gs/open5gs/issues/4492 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-8187 · Security Note
• https://vuldb.com/submit/800025 · Note
• https://t.me/cveNotify/162868 · Telegram Post
• https://vuldb.com/vuln/362339 · Note
• https://t.me/CVEtracker/53222 · Telegram Post
• https://twitter.com/CVEnew/status/2053131371892379792 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2053083225187086471 · Twitter Post
• https://vuldb.com/vuln/362339/cti · Note
• https://github.com/open5gs/open5gs · Note
• https://twitter.com/CVEarity/status/2053835745065132135 · Twitter Post