CVE-2026-64964CWE-340

CVE-2026-64964

published August 20, 2026

CVSS
6.3
EPSS
0%
Percentile
21.0
In the wild
Unconfirmed
What it is

ATutor generates predictable email confirmation tokens due to the use of insufficiently random values in the account confirmation functionality. Due to the use of predictable values related to user registration, an attacker who knows or can predict these values can guess valid account activation tokens. This allows an attacker to activate an unconfirmed account without access to the victim's email inbox.

Product is no longer actively supported and the vulnerabilities have not been fixed. Only version 2.2.4 was tested and confirmed as vulnerable, other versions were not tested but might also be vulnerable.

The record
Technical detail
CVSS
6.3 · NONE
CVSS v4.0
6.3 · CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
EPSS
0.00288 · 21.0th percentile
Weakness
CWE-340 · Generation of Predictable Numbers or Identifiers
Published
2026-08-20T18:17Z
References (2)
EPSS history
Timeline
  • 20 AUG 13:58Z
    Generation of Predictable Email Confirmation Token in ATutor
    cvelistv5