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  4. CVE 2026 39878 chamilo stored xss via user registration leads to
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Back to active CVEs
Critical · CVSS 9.3CVE-2026-39878

Chamilo stored XSS via user registration leads to admin account takeoverCVE-2026-39878

Answer in brief

CVE-2026-39878 records a Critical severity (CVSS 9.3) vulnerability in Chamilo stored XSS via user registration leads to admin account takeover. The current sources do not mark it as known exploited. The current feed maps chamilo/chamilo-lms (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 20, 2026Updated Aug 21, 2026Source checked Oct 6, 2026First seen by HOL Aug 21, 2026Material review Aug 21, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 9.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps chamilo/chamilo-lms (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
chamilo/chamilo-lmsgeneric<=1.11.38= 1.11.38

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for chamilo/chamilo-lms.
  2. 2Review the reported fix. Update chamilo/chamilo-lms to = 1.11.38 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Jul 20, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 21, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 21, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencevokecyber.com
Upstream source description

Chamilo LMS versions 1.11.38 and earlier contain a stored cross-site scripting vulnerability in the user registration form that allows any unauthenticated attacker to execute arbitrary JavaScript in an administrator's browser session, leading to full platform admin account takeover. This has been patched in 1.11.40.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Joplin whiteboard card rendering allows CSS injection into application chromeAlso CWE-79
  • Newell Brands DYMO ID document parsing failing file type extension authentication checkSame generic ecosystem
  • Newell Brands DYMO ID parent directory open to path traversal through improper spheres of controlSame generic ecosystem
  • Bake filesystem entitlement consent is skipped for certain secret and oci-layout definitionsSame generic ecosystem
  • Improper validation of Ops Manager configuration in MongoDB Kubernetes OperatorSame generic ecosystem
  • GraphQL Tools has prototype pollution in well-established utility function `mergeDeep`Same generic ecosystem

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Oct 6, 2026
References
2 linked sources
Open source record