CVE-2026-65828

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Source

https://cve.org/CVERecord?id=CVE-2026-65828

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-65828.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-65828

Aliases

GHSA-x4f3-367g-m93g

Published

2026-09-25T17:28:13Z

Modified

2026-10-28T02:30:21Z

Severity

2.3 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N CVSS Calculator

Summary

Zammad: Pending upload deletion bypass via legacy attachment endpoint

Details

Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, the legacy destroy_form action on AttachmentsController deletes UploadCache Store records based solely on a user-supplied form_id without verifying that the requesting user owns those records. An authenticated attacker who learns another user's pending-upload UUID can silently remove temporary file uploads before the victim submits their ticket or article. This issue is fixed in version 7.1.2.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65828.json"
}

References

Affected packages

Git / github.com/zammad/zammad

Affected ranges

Type

GIT

Repo

https://github.com/zammad/zammad

Events

Introduced

Fixed

7195a4a3e3ba9e801b6ad93f191ae423ed573d15

Fixed

3b755736fdbee8ff6ddf53661d6912d3d3028325

Database specific

Show details

{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "7.1.2"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "3b755736fdbee8ff6ddf53661d6912d3d3028325"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

1.*

1.6.0

3.*

3.7.0

5.*

5.2.0-alpha

5.3.0-alpha

5.4.0-alpha

5.5.0-alpha

6.*

6.0.0-alpha

6.1.0-alpha

6.2.0-alpha

6.3.0-alpha

6.4.0-alpha

6.5.0-alpha

6.6.0-alpha

7.*

7.0.0-alpha

7.1.0

7.1.0-alpha

7.1.1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-65828.json"