EUVD-2026-68720
GHSA-gqgf-x763-r89w
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/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
PR:L because one share link is required; S:C because bypass crosses organizational boundaries to impact separate tenants' resources.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
4DescriptionCVE.org
Pangolin before 1.22.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to access any protected resource by supplying an attacker-controlled URL parameter to the share-link authentication endpoint that omits the expected resource identifier from the token verification call. Attackers holding a single valid share link for any resource can authenticate against arbitrary resources across different organizations, bypassing all configured authentication methods including SSO, resource passwords, PIN codes, email allowlists, and header authentication.
AnalysisAI
Authentication bypass in Pangolin before 1.22.0 allows any attacker holding a single valid share link - for any resource, in any organization - to authenticate against arbitrary protected resources by supplying an attacker-controlled URL parameter to the share-link authentication endpoint that causes the token verification call to omit the expected resource identifier. All configured authentication layers are bypassed simultaneously, including SSO, resource passwords, PIN codes, email allowlists, and header authentication. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must possess at least one valid share link for any resource on the target Pangolin instance - the specific resource or organization the share link belongs to is irrelevant. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N) reflects a network-exploitable flaw requiring no complexity or user interaction, with the only prerequisite being possession of one valid share link (PR:L). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Pangolin to version 1.22.0 immediately; this is the confirmed vendor-released patch per the GitHub release tag at https://github.com/fosrl/pangolin/releases/tag/1.22.0. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit and inventory all active share links in production, immediately disable or rotate links with broad permissions, and implement emergency rate limiting on the share-link authentication endpoint. …
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Same technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today