Medium severity · published Aug 24, 2026
CVE-2026-78186
Open5GS HSS hss-cx-path.c assertion
4.3
CVSS
0.5%
EPSS
No
On KEV
Description
A flaw has been found in Open5GS up to 2.8.0. This affects an unknown function of the file src/hss/hss-cx-path.c of the component HSS. This manipulation of the argument User-Name causes reachable assertion. The attack is possible to be carried out remotely. The exploit has been published and may be used. Patch name: c9abe09421eb99bbf1cd7862a3d375e58a4eb9e4. It is recommended to apply a patch to fix this issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
Open5GS · Open5gs
2.0; 2.1; 2.2; 2.3; 2.4; 2.5; +3 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-78186
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-78186
github.com
https://github.com/open5gs/open5gs/
github.com
https://github.com/open5gs/open5gs/commit/c9abe09421eb99bbf1cd7862a3d375e58a4eb9e4
github.com
https://github.com/open5gs/open5gs/issues/4675
vuldb.com
https://vuldb.com/cve/CVE-2026-78186
vuldb.com
https://vuldb.com/submit/885203
vuldb.com
https://vuldb.com/vuln/394568
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