CVE-2026-34720

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Source

https://cve.org/CVERecord?id=CVE-2026-34720

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34720.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-34720

Aliases

GHSA-hcv6-w4h9-p2p7

Published

2026-04-08T18:11:23.538Z

Modified

2026-07-27T03:56:20.785008673Z

Severity

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

Summary

Zammad has an origin validation error in SSO mechanism

Details

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the SSO mechanism in Zammad was not verifying the header originates from a trusted SSO proxy/gateway before applying further actions on it. This vulnerability is fixed in 7.0.1 and 6.5.4.

Database specific

{
    "cwe_ids": [
        "CWE-346"
    ],
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34720.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"
    ],
    "cpe": [
        "cpe:2.3:a:zammad:zammad:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:zammad:zammad:7.0.0:*:*:*:*:*:*:*"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "6.5.4"
        },
        {
            "introduced": "7.0.0"
        },
        {
            "last_affected": "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-2026-34720.json"