MEDIUMCVSS v3.1 6.5Vulnerability
CVE-2026-117470
Psono Server CE & EE versions 3.1.0 through 7.2.3 did not consume a stored WebAuthn challenge after assertion verification. An unauthenticated remote attacker who possessed the user's password and one captured valid WebAuthn assertion could replay that assertion with separate login tokens while the stored challenge remained unchanged, bypassing the WebAuthn second factor. The attack required capture of a valid assertion and did not itself disclose plaintext secrets.
Properties
- Severity
- MEDIUM
- Nvd fetched at
- 2026-10-27T07:26:21.486506+00:00
- Cvss severity
- MEDIUM
- Cvss score
- 6.5
- Retrieved at
- 2026-10-27T07:27:30+00:00
- Score
- 6.5
- Cvss version
- 3.1
- Last source
- NVD
- Cve id
- CVE-2026-117470
- Cvss vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
- First seen by Signal
- 2026-10-27T07:20:05+00:00
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
- Published at
- 2026-10-27T06:17:24.867
- Last modified
- 2026-10-27T06:17:24.867
Related Entities (1)
HAS_WEAKNESS (1)
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