EUVD-2026-81437
GHSA-wphj-4v3g-8q6c
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/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
Endpoint deliberately disables login and rate limiting, so unauthenticated remote low-complexity access (PR:N/AC:L/AV:N); impact is low across all three - enumeration (C:L), recovery-token write (I:L), and email flooding (A:L).
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
1DescriptionCVE.org
WWBN AVideo through commit e01e41ecc (no patched version available) contains a broken access control flaw in objects/userVerifyEmail.php. The script disables the login requirement ($global['ignoreUserMustBeLoggedIn'] = 1), takes users_id directly from the query string, and calls User::sendVerificationLink() with no session requirement, no CSRF/global token, no relationship check between caller and target, and no enforceRateLimit() call. The only intended throttle is keyed to the caller's own session, so cookie-less requests are never limited. An unauthenticated remote attacker can therefore cause an arbitrary number of verification emails to be sent to any account ID, and can enumerate accounts and their verification status from the three distinct JSON responses ("Verification Sent", "Already verified", "Unknown error"). In addition, createVerificationCode() invokes $user->setRecoverPass() and saves the user, so each anonymous request writes a live password-recovery token onto the targeted account; that token is embedded in base64 in the verification link emailed to the account owner and is accepted by objects/userRecoverPassSave.json.php as the credential for setting a new password.
AnalysisAI
Unbounded verification-email generation and account-status enumeration in WWBN AVideo through commit e01e41ecc allow unauthenticated remote attackers to target arbitrary user IDs, write password-recovery tokens onto victim accounts, and consume mail resources. The exposed objects/userVerifyEmail.php disables login requirements, trusts the users_id query-string value, and lacks CSRF or caller-to-target checks, so the only effective throttle is tied to the caller's own session and is bypassed by cookie-less requests. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions - remote unauthenticated exploitation against default configurations of WWBN AVideo, because objects/userVerifyEmail.php itself sets $global['ignoreUserMustBeLoggedIn']=1, reads users_id directly from the query string, and calls User::sendVerificationLink() with no session, no CSRF/global token, no caller-to-target relationship check, and no enforceRateLimit() call. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine but moderate-severity issue best characterized as an unauthenticated abuse/DoS-plus-enumeration primitive rather than a direct account-takeover. … 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 | No vendor-released patch identified at time of analysis; affected deployments should treat objects/userVerifyEmail.php as untrusted until an upstream fix is available. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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