CVE-2026-34721

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Source

https://cve.org/CVERecord?id=CVE-2026-34721

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34721.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-34721

Aliases

GHSA-mfwp-hx66-626c

Published

2026-04-08T18:12:32.504Z

Modified

2026-07-15T02:19:27.244319259Z

Severity

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

Summary

Zammad has Cross-site request forgery (CSRF) in OAuth callback endpoints

Details

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the OAuth callback endpoints for Microsoft, Google, and Facebook external credentials do not validate a CSRF state parameter. This vulnerability is fixed in 7.0.1 and 6.5.4.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-352"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34721.json"
}

References

Affected packages

Git / github.com/zammad/zammad

Affected ranges

Type

GIT

Repo

https://github.com/zammad/zammad

Events

Introduced

Fixed

15c7e6d4ffd95c84535d334b7c0ce0bc2fbc5228

Introduced

f3228274c4feefac470d7efad12f240debd678bc

Last affected

f3228274c4feefac470d7efad12f240debd678bc

Database specific

{
    "source": [
        "CPE_RANGE",
        "CPE_STRING"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "6.5.4"
        },
        {
            "introduced": "7.0.0"
        },
        {
            "last_affected": "7.0.0"
        }
    ],
    "cpe": [
        "cpe:2.3:a:zammad:zammad:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:zammad:zammad:7.0.0:*:*:*:*:*:*:*"
    ]
}

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

6.5.0-alpha

6.5.1

6.5.2

6.5.3

7.*

7.0.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34721.json"