CVE-2026-53500
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.
Published:Jul 31, 2026
Last Modified:Aug 2, 2026
EPS:Jul 31, 2026
EPSS Score:0.00287
CVSS Score:8.2
Affected Products
Vendor
Product
Action
Vendor
Thumbor
Product
Thumbor
Thumbor
Thumbor
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Related CVEs
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
