Vulnerability · Published Aug 20, 2026 · Assigned by CERT-PL

CVE-2026-64969Insecure Direct Object Reference in ATutor

Medium 5.3

In plain English

A medium-severity authorization bypass via user-controlled key in ATutor from ATutor. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).

Severity (CVSS 4.0)5.3Medium

Exploit odds (30 days)0.4%top 69.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

ATutor is vulnerable to Insecure Direct Object Reference (IDOR) attack in profile picture related endpoints. Any authenticated user, including a student, can supply another user's member_id in a POST request to the profile album endpoint and permanently delete that user's profile picture, including those of instructors and administrators. 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.

Affected products (as reported)

Vendor	Product	Versions
ATutor	ATutor	2.2.4

Weakness: CWE-639 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

References

https://cert.pl/en/posts/2026/08/CVE-2026-64960 third-party-advisory
https://atutor.github.io/ product