VULNERABILITY INTELLIGENCE
CVE-2026-53500
CVSS score8.2 HIGH
EPSS probability0.50%
CISA KEVNot currently listed
Published2026-07-31
Last modified2026-09-08
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
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.
Weakness classification
- security-advisories@github.com: CWE-918