Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessAuthenticate to Tronclass as valid user
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ExploitAccess anonymous grading feature
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ExecutionBypass anonymity restriction via crafted request
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ImpactRetrieve de-anonymized student information
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V14 - Data Protection System info exposure prevention
|
| Exploitation Conditions | Exploitation requires the attacker to hold valid authenticated credentials on the target Tronclass instance (PR:L) and requires that the anonymous grading feature be in use for the targeted course/assignment - the vulnerability specifically allows bypassing the anonymous grading restriction to reveal student identities. There is no user interaction required (UI:N) and the attack is network-reachable (AV:N). Limiting factors: an attacker without a valid account cannot exploit this, and the exposure is confined to anonymous student information within graded submissions (Low confidentiality impact, no integrity or availability effect), so impact is scoped to a privacy/data-disclosure concern rather than system takeover. |
| Impact | This is a medium-severity information disclosure flaw (CVSS 5.3 via the vendor-supplied CVSS 4.0 vector AV:N/AC:L/PR:L/UI:N/VC:L) with no amplifying real-world exploitation signals. No EPSS score was provided in the input, there is no CISA KEV listing (KEV=NO), and no public exploit code was identified (POC=NO), so exploitation status is 'no public exploit identified at time of analysis.' The CVSS vector requires authentication (PR:L), meaning this is not a pre-auth mass-exploitable issue but rather an authenticated privilege/restriction-bypass against a specific application feature, which substantially lowers real-world urgency. The confidentiality impact is only Low (VC:L) and there is no integrity or availability impact (VI:N/VA:N), consistent with limited exposure of anonymous student grading data rather than full account or system compromise. No SSVC decision data was provided. Net assessment: a genuine but contained privacy/data-exposure issue of medium priority - prioritize patching in affected academic deployments, but this does not carry the hallmarks of a widely weaponized or urgently exploited vulnerability. |
| Exploit ScenarioDerived | An attacker with legitimate authenticated access to a Tronclass instance (e.g., a student or instructor account) manipulates requests to the grading functionality to bypass the anonymous-grading restriction. By doing so, they de-anonymize submissions and retrieve the identities and associated information of students who were supposed to remain anonymous. No public proof-of-concept exploit code was identified at the time of analysis. |
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Alert meAnalysisAIv1 – Oct 14, 2026
WisdomGarden Tronclass, a learning management system, exposes anonymous student information to authenticated remote users who bypass the platform's anonymous grading restriction, as tracked under CVE-2026-110466. Exploitation requires valid credentials on the target instance (CVSS 3.1 vector PR:L, AV:N, no user interaction) and is only meaningful where the anonymous grading feature is actually in use for the targeted course or assignment; the resulting impact is limited to low confidentiality loss (privacy/disclosure of student identities behind anonymized submissions) with no integrity or availability effect. There is no public exploit identified at time of analysis and no KEV or EPSS signal amplifying real-world risk, so this rates as a medium-severity information-disclosure issue driven primarily by privacy exposure.
RemediationAI
No vendor-released patch identified at time of analysis - the CVE record and TWCERT/CC references provide no explicit fixed version, so administrators must confirm the remediated build directly with WisdomGarden and apply it as soon as the vendor publishes one, monitoring https://www.twcert.org.tw/tw/cp-132-11272-91666-1.html and https://www.twcert.org.tw/en/cp-139-11273-b9383-2.html for updates. Until a fix is confirmed and deployed, the most effective compensating control is to disable or refrain from using the anonymous grading feature for courses and assignments where student identity must remain confidential, accepting the trade-off that instructors lose blind-grading functionality and must grade with identities visible; if anonymous grading cannot be disabled, restrict access to the grading and submission endpoints to the smallest possible set of trusted instructor accounts, since the flaw is only exploitable by an authenticated user with access to those workflows. Additional hardening includes aggressively pruning stale, over-privileged, or shared Tronclass accounts (especially student and teaching-assistant roles) to shrink the pool of PR:L footholds, enabling audit logging on grading and submission views and alerting on anomalous retrieval of anonymized submissions, and treating the disclosed student identity data as a privacy incident requiring notification if exposure is detected. These measures reduce but do not eliminate risk, as a legitimate account holder with grading access may still reach the vulnerable logic; only a vendor fix reliably closes the restriction bypass.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
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Technical ContextAI · show details
Tronclass is a commercial learning management system (LMS) developed by WisdomGarden and widely deployed in Taiwan and other APAC education environments; the affected scope is expressed by the wildcard CPE cpe:2.3:a:wisdomgarden:tronclass:*:*:*:*:*:*:*:*, meaning the vendor advisory does not pin the disclosure to a narrowly bounded version range. The root cause maps to CWE-497 (Exposure of Sensitive System Information to an Unauthorized Control Sphere): the platform's anonymous grading workflow is supposed to strip or mask student-identifying data from submissions so instructors can grade impartially, but the access-control logic governing that masking can be circumvented, letting an authenticated user retrieve the underlying student identity information associated with anonymized submissions. This is an authorization/logic deficiency in the anonymization layer rather than a memory-safety or injection flaw - there is no code execution, no data modification, and no denial of service, which is consistent with the CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N and all subsequent-system metrics N) and the independently assessed CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N). The weakness is only reachable by a user who already holds a valid account on the instance, so the practical threat model is an insider or low-privileged account holder (for example a student, teaching assistant, or instructor) probing grading-related endpoints, not an anonymous internet attacker.
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Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Network-reachable (AV:N) with low complexity (AC:L) but requires an authenticated account (PR:L); only limited student data is disclosed, so C:L and I/A:N.
Primary rating from Vendor (twcert).
CVSS VectorVendor: twcert
DescriptionCVE.org
Tronclass developed by WisdomGarden has a Sensitive Data Exposure vulnerability. Authenticated remote attackers can bypass anonymous grading restrictions and obtain anonymous student information.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
Authenticated users on WisdomGarden Tronclass deployments can read the peer-review scores of any student by tampering wi
Authenticated low-privilege users of WisdomGarden Tronclass can alter the peer review scores of any student by manipulat
The tumbnail API of Tronclass from WisdomGarden lacks proper access control, allowing unauthenticated remote attackers t
EUVD-2026-100872
GHSA-277v-q825-2xgx
NVD
CVE.org
EPSS
Vulnrichment
Exploit-DB