CVE-2026-18526

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Source

https://cve.org/CVERecord?id=CVE-2026-18526

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-18526.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-18526

Published

2026-08-19T14:17:00Z

Modified

2026-08-30T03:30:14Z

Severity

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

Summary

HumHub 1.18.4 / 1.18.4-pl1 – Stored Cross-Site Scripting in oEmbed confirmation

Details

HumHub Community Edition 1.18.4 and 1.18.4-pl1 contain a stored Cross-Site Scripting (XSS) vulnerability in the oEmbed confirmation rendering workflow.

Database specific

{
    "cna_assigner": "Fluid Attacks",
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18526.json"
}

References

Affected packages

Git / github.com/humhub/humhub

Affected ranges

Type

GIT

Repo

https://github.com/humhub/humhub

Events

Introduced

3320c4140371b62d8694eeaf943e606d902f007a

Last Affected

3320c4140371b62d8694eeaf943e606d902f007a

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "1.18.4"
        },
        {
            "last_affected": "1.18.4"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

1.*

1.18.4

v1.*

v1.18.4

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-18526.json"