Ella Core Has Audit Log Falsification via Path/Body IMSI Mismatch in UpdateSubscriber
Priority LOW 13CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00192 8th percentileScored 2026-11-07
Fix Fixed core (ellanetworks): 1.8.0github.com/ellanetworks/core (Go): 1.8.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ellanetworks | core | before 1.8.0 | 1.8.0 | Patch available | CNA |
| — | github.com/ellanetworks/core (Go) | before 1.8.0 | 1.8.0 | Patch available | GHSA-xw45-cc32-442f |
- core Vendorellanetworks Affected before 1.8.0 Fixed in 1.8.0 Patch available CNA
- github.com/ellanetworks/core (Go) Vendor— Affected before 1.8.0 Fixed in 1.8.0 Patch available GHSA-xw45-cc32-442f
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ellanetworks:ella_core:*:*:*:*:*:*:*:* | before 1.8.0 | Vulnerable | ellanetworks |
- cpe:2.3:a:ellanetworks:ella_core:*:*:*:*:*:*:*:* Versions before 1.8.0 Vulnerable ·ellanetworks
Remediation
- Fix · CNA core (ellanetworks) Fixed in 1.8.0
- Fix · GHSA-xw45-cc32-442f github.com/ellanetworks/core (Go) Fixed in 1.8.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-34762
- 2026-10-03 Alias added: GHSA-xw45-cc32-442f
References
Advisory 2
More ellanetworks Ella Core vulnerabilities
- TI-2026-24847 Ella Core: Unauthenticated AMF DoS via malformed InitialUEMessage with undersized integrity-protected NAS payload CVSS 3.1HIGH 7.5
- TI-2026-26264 Ella Core has Privilege Escalation via Database Restore by NetworkManager role CVSS 3.1HIGH 7.2
- TI-2026-25694 Ella Core panics on malformed ULNASTransport Message without a Request Type CVSS 3.1HIGH 7.5
- TI-2026-25693 Ella Core panics on malformed NGAP Location Report CVSS 3.1HIGH 7.5
- TI-2026-25692 Ella Core panics on invalid PDU Session IDs in NGAP messages CVSS 3.1HIGH 7.5
- TI-2026-24848 Ella Core: AMF DoS via malformed PathSwitchRequest with empty NR security capability bitstrings CVSS 3.1HIGH 7.5
Sources
- CVE-2026-34762 · CVE Program
- CVE-2026-34762 · NVD
- FIRST EPSS
- GHSA-xw45-cc32-442f · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences