CVE-2026-53500

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-53500
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53500.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-53500
Aliases
Downstream
Published
2026-07-31T18:35:54.234Z
Modified
2026-08-01T11:30:24.916447192Z
Severity
  • 8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L CVSS Calculator
Summary
Thumbor treats ALLOWED_SOURCES string patterns as unescaped regex, allowing hostname bypass via wildcard dot
Details

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.

Database specific 
{
    "cwe_ids": [
        "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53500.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/thumbor/thumbor

Affected ranges

Type
GIT
Repo
https://github.com/thumbor/thumbor
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
a366291cfcd29ec140911c97ee8e0e794f2a40f9
Database specific 
{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "7.8.0"
        }
    ]
}

Affected versions

0.*
0.1.0
0.1.1
0.2.0
0.2.1
0.3.0
0.3.1
0.4.0
0.4.1
0.5.0
0.5.1
0.6.1
0.6.2
0.6.3
0.6.4
0.6.5
0.7.0
0.7.10
0.7.11
0.7.12
0.7.13
0.7.14
0.7.9
0.8.0
0.8.2
0.8.3
0.8.4
0.9.0
0.9.1
0.9.3
0.9.4
0.9.5
0.9.6
0.9.7
2.*
2.0.2
2.0.4
2.0.5
2.3.0
2.4.1
2.4.2
2.4.3
2.4.4
2.4.5
2.4.6
2.4.7
2.4.8
2.4.9
2.5.0
2.5.1
2.5.2
2.6.0
2.6.1
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.7.0
2.7.1
2.7.2
2.7.3
2.7.4
2.7.5
2.7.6
2.7.8
2.8.0
2.8.1
3.*
3.0.0
3.0.1
3.0.2
3.1.0
3.1.1
3.10.0
3.10.1
3.10.2
3.11.0
3.11.1
3.12.0
3.12.1
3.12.2
3.13.0
3.13.1
3.13.2
3.13.3
3.14.0
3.14.1
3.14.2
3.14.3
3.14.4
3.14.5
3.14.6
3.14.7
3.15.0
3.2.0
3.3.0
3.4.0
3.4.1
3.4.2
3.5.0
3.5.1
3.5.2
3.6.0
3.6.1
3.6.10
3.6.11
3.6.2
3.6.3
3.6.4
3.6.5
3.6.6
3.6.7
3.6.8
3.6.9
3.7.0
3.7.1
3.7.2
3.7.3
3.8.0
3.8.1
3.9.0
3.9.1
3.9.2
3.9.3
3.9.4
4.*
4.0.0
4.0.3
4.0.4
4.1.0
4.1.1
4.1.2
4.1.3
4.10.0
4.10.1
4.10.2
4.10.3
4.11.0
4.11.1
4.12.0
4.12.1
4.12.2
4.2.0
4.2.1
4.3.0
4.4.0
4.4.1
4.5.0
4.5.1
4.5.2
4.5.3
4.5.4
4.6.0
4.7.0
4.7.1
4.8.0
4.8.1
4.8.2
4.8.3
4.8.6
4.8.7
4.9.0
4.9.1
5.*
5.0.0
5.0.0-rc1
5.0.0rc2
5.0.1
5.0.2
5.0.3
5.0.4
5.0.5
5.0.6
5.1.0
5.2.0
5.2.1
6.*
6.0.0
6.0.0b1
6.0.0b2
6.0.0b3
6.0.0b5
6.0.1
6.2.0
6.2.1
6.3.0
6.3.1
6.3.2
6.3.3rc
6.4.0
6.4.1
6.4.2
6.4.3
6.5.0
6.5.2
6.6.0
6.6.1
6.7.0
6.7.1
7.*
7.0.0
7.0.0a1
7.0.0a2
7.0.0a3
7.0.0a4
7.0.0a5
7.0.0b1
7.0.1
7.0.10
7.0.11
7.0.12
7.0.2
7.0.3
7.0.5
7.0.6
7.0.7
7.0.8
7.0.9
7.1.0
7.1.1
7.1.2
7.2.0
7.2.1
7.3.0
7.3.1
7.3.2
7.4.1
7.4.2
7.4.3
7.4.4
7.4.5
7.4.6
7.4.7
7.5.0
7.5.1
7.5.2
7.6.0
7.7.0
7.7.1
7.7.2
7.7.3
7.7.4
7.7.5
7.7.6
7.7.7

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53500.json"