HumHub: XSS in Button component

{
  "id": "585f0c2d2d40d95739d5dca48bcad039cecb5961dd048ee2cbc88e19c8c80f42",
  "url": "https://osv.dev/vulnerability/CVE-2026-29048",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "HumHub: XSS in Button component",
    "summary": "HumHub is an Open Source Enterprise Social Network. In version 1.18.0, a cross-site scripting vulnerability was identified in the Button component of version 1.18.0. Due to inconsistent output encoding at several points within the software, malicious scripts could be injected and executed in the context of the user's browser. This issue has been patched in version 1.18.1.",
    "evidence": "osv:CVE-2026-29048",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-29048",
      "aliases": [
        "CVE-2026-29048",
        "GHSA-qxjh-478x-23gm"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/humhub/humhub",
              "type": "GIT",
              "events": [
                {
                  "introduced": "979fe229dc3b2a456f202463cff3d9bd2c34f33b"
                },
                {
                  "fixed": "bd06ab4c75f6c65295ee3e1ce3643437e8f9d10a"
                },
                {
                  "fixed": "c9901f89cfb79a83b77bdf729193a594da73975d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "= 1.18.0"
                      },
                      {
                        "last_affected": "= 1.18.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "fixed": "bd06ab4c75f6c65295ee3e1ce3643437e8f9d10a"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "c9901f89cfb79a83b77bdf729193a594da73975d"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.18.1"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.18.0-NA",
            "= 1.18.0",
            "v1.18.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-29048.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:27.095839613Z",
      "provider": "osv",
      "references": [
        "https://github.com/humhub/humhub/releases/tag/v1.18.1",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/29xxx/CVE-2026-29048.json",
        "https://github.com/humhub/humhub/security/advisories/GHSA-qxjh-478x-23gm",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-29048",
        "https://github.com/humhub/humhub/commit/bd06ab4c75f6c65295ee3e1ce3643437e8f9d10a",
        "https://github.com/humhub/humhub/pull/8039"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/29xxx/CVE-2026-29048.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-29048",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 493837,
  "published_at": "2026-03-06T06:59:42.084+00:00"
}