CVE-2026-53500
High
Description
Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, the ALLOWED_SOURCES configuration passes plain strings to re.match() without escaping dots, so a hostname differing at dot positions can match the allowlist. This issue is fixed in 7.8.0.
SeverityHigh
CVSS8.2
Exploit probability—
ProductThumbor
PublishedJul 31, 2026
First seenJul 31, 2026
Weakness typeCWE-918Server-side request forgery (SSRF)
How to fix
Update
- thumbor7.8.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| thumborPyPI | v < 7.8.0 | 7.8.0 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.