CVE-2026-59731

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-59731
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-59731.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-59731
Aliases
Downstream
Published
2026-07-08T16:27:18Z
Modified
2026-10-28T02:31:01Z
Severity
  • 8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N CVSS Calculator
Summary
Astro 6.4.7 Authorization Bypass via Decode Iteration Limit and Rewrite Path Canonicalization Mismatch
Details

Astro is a web framework for content-driven websites. Version 6.4.7 performs authorization decisions on a partially decoded pathname after reaching the iterative URL decoder limit, while later rewrite route matching performs an additional decodeURI() operation and can resolve the request to a protected route. This issue is fixed in version 6.4.8.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-647"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59731.json"
}
References

Affected packages

Git / github.com/withastro/astro

Affected ranges

Type
GIT
Repo
https://github.com/withastro/astro
Events
Introduced
910e121ad33c481dcfb4b313abd7d8ff370ee347
Fixed
3ec2c10b1fd073916a00b60ff74d9d5bb17ad208
Fixed
27c80ea92248993e5fce94b2c26d87d611ab6785
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "6.4.7"
                },
                {
                    "fixed": "6.4.8"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "27c80ea92248993e5fce94b2c26d87d611ab6785"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "astro@6.4.8",
            "range": [
                {
                    "fixed": "3ec2c10b1fd073916a00b60ff74d9d5bb17ad208"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

astro@6.*
astro@6.4.7

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-59731.json"