CVE-2026-34762 Ella Core Has Audit Log Falsification via Path/Body IMSI Mismatch in UpdateSubscriber

What is CVE-2026-34762?

CVE-2026-34762 is a low-severity vulnerability in ellanetworks core, published on 2 Apr 2026. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Ella Core is a 5G core designed for private networks. Prior to version 1.8.0, the PUT /api/v1/subscriber/{imsi} API accepts an IMSI identifier from both the URL path and the JSON request body but never verifies they match. This allows an authenticated NetworkManager to modify any subscriber's policy while the audit trail records a fabricated or unrelated subscriber IMSI. This issue has been patched in version 1.8.0.

Weakness: CWE-20

Which versions are affected by CVE-2026-34762?

3 open source packages ship an affected version, including github.com/ellanetworks/core. It affects 1 product.

Products include Ellanetworks Ella Core.

How do I fix CVE-2026-34762?

Upgrade github.com/ellanetworks/core to 1.8.0 or later.

Is CVE-2026-34762 being exploited?

There is no known exploitation of CVE-2026-34762 in the wild and no public exploit code.

Other vulnerabilities in ellanetworks core

• CVE-2026-33282 Ella Core panics on malformed NGAP Location Report High 7.5
• CVE-2026-32319 Ella Core: Unauthenticated AMF DoS via malformed InitialUEMessage with undersized integrity-protected NAS payload High 7.5
• CVE-2026-33906 Ella Core has Privilege Escalation via Database Restore by NetworkManager role High 7.2
• CVE-2026-33903 Ella Core panics when processing a crafted NGAP LocationReport message Medium 6.5
• CVE-2026-33904 Ella Core has a Denial of Service via SCTP connection cleanup deadlock Medium 6.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-xw45-cc32-442f, GO-2026-5770.