CVE-2026-126952
Zipline through 4.4.0 WebAuthn Authentication Bypass via Passkey Login
Zipline through 4.4.0 contains an authentication bypass vulnerability in the WebAuthn login endpoint that creates sessions for a supplied registered credential ID without verifying the assertion. Attackers who obtain a target's passkey credential ID can impersonate that account without its authenticator, potentially gaining administrative control over SUPERADMIN accounts.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| zipline diced |
≥ 0; ≤ 4.4.0 (affected, semver)
Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 9.2 critical |
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | CNA: VulnCheck |
| 3.1 / 8.1 high |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | CNA: VulnCheck |
| 4.0 / 9.2 critical |
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
| 3.1 / 8.1 high |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD: [email protected] |
Exploit evidence
- https://github.com/diced/zipline/security/advisories/GHSA-8g3f-425r-35rq
exploit · ADP: CISA-ADP
References
- https://github.com/diced/zipline/security/advisories/GHSA-8g3f-425r-35rqCNA: VulnCheck · vendor-advisory
- https://www.vulncheck.com/advisories/zipline-through-4.4.0-webauthn-authentication-bypass-via-passkey-loginCNA: VulnCheck · third-party-advisory
- https://github.com/diced/zipline/security/advisories/GHSA-8g3f-425r-35rqADP: CISA-ADP · exploit
- https://github.com/diced/zipline/security/advisories/GHSA-8g3f-425r-35rq[email protected]
- https://www.vulncheck.com/advisories/zipline-through-4.4.0-webauthn-authentication-bypass-via-passkey-login[email protected]
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