CVE-2026-64963Network attack vector

Cross-course file disclosure via get.php traversal

Published Aug 20, 2026 · Updated Aug 20, 2026

Path traversal in ATutor 2.2.4 allows remote authenticated users to read files from other course directories via crafted get.php paths. When AT_FORCE_GET_FILE is enabled, get.php takes PATH_INFO or related request path data, appends it to AT_CONTENT_DIR and the current session course_id, and only then resolves the path, letting ../ segments escape the active course directory and reach sibling course content. Exploitation requires a valid session and the non-default AT_FORCE_GET_FILE setting; the published impact is unauthorized cross-course file access and filesystem layout disclosure, not arbitrary server-wide file read.

CVSS severity2.3
Low
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in ATutor 2.2.4 allows remote authenticated users to read files from other course directories via crafted get.php paths. When AT_FORCE_GET_FILE is enabled, get.php takes PATH_INFO or related request path data, appends it to AT_CONTENT_DIR and the current session course_id, and only then resolves the path, letting ../ segments escape the active course directory and reach sibling course content. Exploitation requires a valid session and the non-default AT_FORCE_GET_FILE setting; the published impact is unauthorized cross-course file access and filesystem layout disclosure, not arbitrary server-wide file read.

The record

CVE
CVE-2026-64963
Published
Aug 20, 2026
Updated
Aug 20, 2026
Vendor
ATutor
Product
ATutor
Classifications
CWE-22, CAPEC-126, T1005
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

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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

2.3CERT.PLCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CAPEC-126Path Traversal
T1005Data from Local System

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

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Your stack

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