CVE-2026-64971Network attack vector

Arbitrary script execution via reflected restore input

Published Aug 20, 2026 · Updated Aug 20, 2026

Reflected XSS in ATutor 2.2.4 allows remote authenticated users to execute arbitrary JavaScript in a victim's browser via a crafted restore URL. CERT Polska identifies the flaw only as ATutor's restore functionality and has not published the specific endpoint or parameter; the public record indicates untrusted request data is reflected into the response without output encoding. Reachability depends on access to the restore feature and user interaction to open the crafted link, with the published impact limited to script execution in the ATutor web origin.

CVSS severity4.8
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Reflected XSS in ATutor 2.2.4 allows remote authenticated users to execute arbitrary JavaScript in a victim's browser via a crafted restore URL. CERT Polska identifies the flaw only as ATutor's restore functionality and has not published the specific endpoint or parameter; the public record indicates untrusted request data is reflected into the response without output encoding. Reachability depends on access to the restore feature and user interaction to open the crafted link, with the published impact limited to script execution in the ATutor web origin.

The record

CVE
CVE-2026-64971
Published
Aug 20, 2026
Updated
Aug 20, 2026
Vendor
ATutor
Product
ATutor
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.2.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ATutor · ATutorversion=2.2.4

Published CVSS scores

4.8CERT.PLCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo