Vulnerability-Lookup

CVE-2026-27621 (GCVE-0-2026-27621)

Vulnerability from cvelistv5 – Published: 2026-02-25 02:36 – Updated: 2026-02-25 02:36

Title

TypiCMS Core has Stored Cross-Site Scripting (XSS) via SVG File Upload

Summary

TypiCMS is a multilingual content management system based on the Laravel framework. A Stored Cross-Site Scripting (XSS) vulnerability exists in the file upload module of TypiCMS prior to version 16.1.7. The application allows users with file upload permissions to upload SVG files. While there is a MIME type validation, the content of the SVG file is not sanitized. An attacker can upload a specially crafted SVG file containing malicious JavaScript code. When another user (such as an administrator) views or accesses this file through the application, the script executes in their browser, leading to a compromise of that user's session. The issue is exacerbated by a bug in the SVG parsing logic, which can cause a 500 error if the uploaded SVG does not contain a `viewBox` attribute. However, this does not mitigate the XSS vulnerability, as an attacker can easily include a valid `viewBox` attribute in their malicious payload. Version 16.1.7 of TypiCMS Core fixes the issue.

Severity ?

6.8 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

GitHub_M

References

URL

Tags

	https://github.com/TypiCMS/Core/security/advisori…	x_refsource_CONFIRM
	https://github.com/TypiCMS/Core/commit/d480a0be1e…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	TypiCMS	Core	Affected: < 16.1.7

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "Core",
          "vendor": "TypiCMS",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 16.1.7"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "TypiCMS is a multilingual content management system based on the Laravel framework. A Stored Cross-Site Scripting (XSS) vulnerability exists in the file upload module of TypiCMS prior to version 16.1.7. The application allows users with file upload permissions to upload SVG files. While there is a MIME type validation, the content of the SVG file is not sanitized. An attacker can upload a specially crafted SVG file containing malicious JavaScript code. When another user (such as an administrator) views or accesses this file through the application, the script executes in their browser, leading to a compromise of that user\u0027s session. The issue is exacerbated by a bug in the SVG parsing logic, which can cause a 500 error if the uploaded SVG does not contain a `viewBox` attribute. However, this does not mitigate the XSS vulnerability, as an attacker can easily include a valid `viewBox` attribute in their malicious payload. Version 16.1.7 of TypiCMS Core fixes the issue."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "ACTIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-25T02:36:12.353Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/TypiCMS/Core/security/advisories/GHSA-xfvg-8v67-j7wp",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/TypiCMS/Core/security/advisories/GHSA-xfvg-8v67-j7wp"
        },
        {
          "name": "https://github.com/TypiCMS/Core/commit/d480a0be1e8e7c0600bb9a325bb11920ee66497d",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/TypiCMS/Core/commit/d480a0be1e8e7c0600bb9a325bb11920ee66497d"
        }
      ],
      "source": {
        "advisory": "GHSA-xfvg-8v67-j7wp",
        "discovery": "UNKNOWN"
      },
      "title": "TypiCMS Core has Stored Cross-Site Scripting (XSS) via SVG File Upload"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-27621",
    "datePublished": "2026-02-25T02:36:12.353Z",
    "dateReserved": "2026-02-20T22:02:30.026Z",
    "dateUpdated": "2026-02-25T02:36:12.353Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

FKIE_CVE-2026-27621

Vulnerability from fkie_nvd - Published: 2026-02-25 03:16 - Updated: 2026-02-25 03:16

Severity ?

6.8 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N