CVE-2026-119555— Moodle through 5.3.0, 5.2.4, 5.1.8, 5.0.11 and 4.5.15 Information Disclosure via core_grades_get_feedback

Quick assessment

Affected

Moodle Project moodle

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Moodle 4.2.0 至 4.5.15、5.0.0 至 5.0.11、5.1.0 至 5.1.8、5.2.0 至 5.2.4 以及 5.3.0 版本中，核心 Web 服务存在信息泄露漏洞。该服务未实施组成员资格和课程注册检查，导致非编辑教师可通过遍历用户 ID（userid）读取其他小组的成绩反馈，以及获取用户的姓名和身份信息（如电子邮件地址）。

CVSS 4.3 · Medium Updated Oct 30, 2026

Possible ATT&CK Techniques 2 AI

T1056 · Input Capture T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

Moodle through 5.3.0, 5.2.4, 5.1.8, 5.0.11 and 4.5.15 Information Disclosure via core_grades_get_feedback

Source: CVE Program / CVE List V5

Vulnerability Description

Moodle 4.2.0 through 4.5.15, 5.0.0 through 5.0.11, 5.1.0 through 5.1.8, 5.2.0 through 5.2.4, and 5.3.0 contain an information disclosure vulnerability in the core_grades_get_feedback web service. The service lacks group-membership and enrolment checks, so non-editing teachers can iterate userid values to read other groups' grade feedback and users' names and identity fields such as email.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Source: CVE Program / CVE List V5

Vulnerability Type

通过用户控制密钥绕过授权机制

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Moodle Project	moodle	5.3.0	-

II. Public POCs for CVE-2026-119555

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-119555

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Other References for CVE-2026-119555 (4)

https://github.com/moodle/moodle product
https://github.com/moodle/moodle/blob/v5.3.0/public/grade/classes/external/get_feedback.php#L77-L96 technical-description
https://abraxaslabs.tech/research/moodle-grades-feedback-idor third-party-advisory
https://www.vulncheck.com/advisories/moodle-through-5.3.0-5.2.4-5.1.8-5.0.11-and-4.5.15-information-disclosure-via-core-grades-get-feedback third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-119555

Same Patch Batch · Moodle Project · 2026-10-30 · 4 CVEs total

CVE-2026-119553	6.5 MEDIUM	Moodle through 5.3.0, 5.2.4, 5.1.8, 5.0.11 and 4.5.15 Blackboard Import Path Traversal
CVE-2026-119554	5.9 MEDIUM	Moodle through 5.3.0, 5.2.4, 5.1.8, 5.0.11 and 4.5.15 SQL Injection via enrol_database Cou
CVE-2026-119556	4.3 MEDIUM	Moodle through 5.3.0, 5.2.4, 5.1.8, 5.0.11 and 4.5.15 Missing Authorization via core_grade

IV. Related Vulnerabilities

Same product: moodle

Same vendor: Moodle Project

Same weakness: CWE-639