UBUNTU-CVE-2026-53502

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Source
https://ubuntu.com/security/CVE-2026-53502
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53502.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-53502
Upstream
Published
2026-07-31T19:17:00Z
Modified
2026-08-06T00:20:53Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, fileloader decodes percent-encoded path segments after its root-boundary validation, allowing traversal outside FILELOADERROOTPATH through watermark or frame filter input. This issue is fixed in 7.8.0.

References

Affected packages

Ubuntu:26.04:LTS / thumbor

Package

Name
thumbor
Purl
pkg:deb/ubuntu/thumbor?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

7.*
7.7.7-4
7.7.7-5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "7.7.7-5",
            "binary_name": "thumbor"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53502.json"