CVE-2026-92913

AVideo Weak PRNG Activation Code Authentication Bypass

State
Published
Severity
9.1 Critical
Published
Sep 17, 2026
Updated
Sep 17, 2026
Reserved
Sep 17, 2026

Read the record on cve.org

Description

AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 uses a cryptographically weak pseudo-random number generator when creating account activation / login pairing codes. getRandomCode() in objects/functions.php derives the code entirely from uniqid() (sprintf('%08x%05x', seconds, microseconds)) with a single non-CSPRNG rand() character used only as padding, reducing the code space to roughly 36 x 10^6 (~2^25) values for a known generation second. Because plugin/API/set.json.php?APIName=login_code can be called without authentication, it also serves as an oracle for the server's exact microtime. An unauthenticated remote attacker who guesses a valid, unexpired code (codes expire after 10 minutes) can redeem it at plugin/API/get.json.php?APIName=login_code to obtain the target account's email address and a User::getUserHash(users_id, '+1 year') value, a credential accepted in place of the account password for one year, resulting in account takeover. No patched version is available.

Scores

CVSSScoreVectorSource
4.09.1 CriticalCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:NVulnCheck
3.17.4 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:NVulnCheck

Weaknesses

  • CWE-330 Use of Insufficiently Random Values

Affected Products

ProductVersions
AVideoWWBN
  • c3edcc274c389816d434acadac07ee78eaf330c1 and earlierAffected

References

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