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Back to active CVEs
Low · CVSS 2.1CVE-2026-117533

REDAXO 5.18.0 before 5.21.4 Stored XSS via Unsanitized Mediapool SVG UploadsCVE-2026-117533

Answer in brief

CVE-2026-117533 records a Low severity (CVSS 2.1) vulnerability in REDAXO 5.18.0 before 5.21.4 Stored XSS via Unsanitized Mediapool SVG Uploads. The current sources do not mark it as known exploited. The current feed maps redaxo/core (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 Oct 27, 2026Updated Oct 27, 2026Source checked Oct 27, 2026First seen by HOL Oct 27, 2026Material review Oct 27, 2026
Upstream Advisory

Key facts

Risk
Low · CVSS 2.1
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 2.1. 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 redaxo/core (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
redaxo/coregeneric>=5.18.0 <5.21.45.21.4

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for redaxo/core.
  2. 2Review the reported fix. Update redaxo/core to 5.21.4 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 27, 2026

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

  2. Source modified

    Oct 27, 2026

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

  3. First seen by HOL

    Oct 27, 2026

Sources and claim methodology

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

REDAXO from 5.18.0 before 5.21.4 contains a stored cross-site scripting vulnerability because rex_media_service moves uploaded SVG files into the public media folder before sanitizing them. Authenticated users with mediapool upload rights can race the sanitizer or exhaust memory limits to leave script-laden SVGs publicly served, executing scripts in victims' backend sessions.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • REDAXO core before 5.21.5 Missing Authorization in rex_api_package APISame redaxo/core package
  • REDAXO before 5.21.5 Insufficient Session Expiration on Password ChangeSame redaxo/core package
  • REDAXO before 5.21.5 CSRF via Safe Mode Toggle ParameterSame redaxo/core package
  • REDAXO before 5.21.5 Privilege Escalation via Backup Export of Authentication TablesSame redaxo/core package
  • REDAXO before 5.21.4 Missing Authorization in Version and History PreviewsSame redaxo/core package
  • REDAXO before 5.21.4 Missing Authorization in Media Pool Bulk MoveSame redaxo/core package

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Oct 27, 2026
References
2 linked sources
Open source record