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CVE-2025-65676: Stored Cross site scripting (XSS) vulnerability in Classroomio LMS 0.1.13 allows authenticated attackers to...

Stored Cross site scripting (XSS) vulnerability in Classroomio LMS 0.1.13 allows authenticated attackers to execute arbitrary code via crafted SVG cover images.

MediumCVSS 5.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

Classroomio LMS 0.1.13 is reported to allow a logged-in attacker to store malicious content through SVG cover images. If another user views the affected content, browser-executed script could run in that user's session. The CVE is medium severity, and the provided sources do not show confirmed active exploitation.

Executive priority

Treat as a moderate-priority application security issue. Prioritize systems with untrusted course creators, multi-tenant usage, or administrator sessions exposed to user-uploaded content.

Technical view

The issue is a stored cross-site scripting vulnerability, CWE-79, in Classroomio LMS 0.1.13. The reported vector is crafted SVG cover images uploaded by an authenticated user, with user interaction required for impact. CVSS 3.1 is 5.4: network reachable, low complexity, low privileges, changed scope, low confidentiality and integrity impact, no availability impact.

Likely exposure

Exposure appears limited to deployments of Classroomio LMS 0.1.13 that allow authenticated users to upload SVG cover images. The structured affected-product metadata is incomplete and lists vendor, product, and versions as n/a.

Exploitation context

The source bundle marks KEV as false and provides no evidence of active exploitation. Exploitation requires authentication and a victim viewing affected content, reducing urgency compared with unauthenticated or wormable issues.

Researcher notes

Evidence is sparse. The CVE record names Classroomio LMS 0.1.13 and SVG cover images, but structured affected metadata is incomplete and no patch details are provided in the bundle.

Mitigation direction

  • Check Classroomio project guidance for a fixed release or recommended workaround.
  • Apply any vendor-provided update or configuration change when available.
  • Assess whether SVG cover-image uploads can be disabled through supported settings.
  • Limit upload permissions to trusted users until vendor guidance is confirmed.

Validation and detection

  • Inventory Classroomio deployments and confirm whether version 0.1.13 is present.
  • Review whether authenticated users can upload SVG cover images.
  • Check application content for existing SVG cover images from untrusted users.
  • Confirm vendor or project advisories before closing remediation.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-79: User-session and phishing behavior lookup

Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2025-65676 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.4 (3.1)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
3Timeline events
1ADP providers
3Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: pocAutomatable: noTechnical Impact: partial

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.4CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N2.32.7CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

5.4Medium
CVSS 3.1 vector shape for CVE-2025-65676Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
cvssV3_1other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

CWE-79

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.