Administrator takeover via unsanitized SVG upload
Published Apr 28, 2026 · Updated Apr 28, 2026
Stored XSS in FUEL CMS 1.5.2 and earlier allows remote authenticated users to execute JavaScript through crafted SVG asset uploads. The asset upload workflow stores SVG files without neutralizing embedded script, so the code runs when an administrator opens or previews the uploaded file. Low-privileged access is sufficient, but administrator interaction is required; the script can read the profile CSRF token and change administrator credentials.
Summary
What happened
Stored XSS in FUEL CMS 1.5.2 and earlier allows remote authenticated users to execute JavaScript through crafted SVG asset uploads. The asset upload workflow stores SVG files without neutralizing embedded script, so the code runs when an administrator opens or previews the uploaded file. Low-privileged access is sufficient, but administrator interaction is required; the script can read the profile CSRF token and change administrator credentials.
The record
- CVE
- CVE-2026-38948
- Published
- Apr 28, 2026
- Updated
- Apr 28, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-79, T1203
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 28, 2026CVE publishedPublication date reported by the CVE source.
- Apr 28, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Stored XSS SVG upload proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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