vulnerability / NVI-00005928 / Revision 5
TypiCMS Core has Stored Cross-Site Scripting (XSS) via SVG File Upload
GitHub lists this reviewed advisory for typicms/core, typicms/core, typicms/core, typicms/core, typicms/core. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
5.4 MEDIUM (3.1)
nvd@nist.gov severity; no combined Null risk score.
6.8 MEDIUM (4.0)
security-advisories@github.com severity; no combined Null risk score.
0.224%
FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.1305. Missing scores are unknown.
As of · FIRST EPSS
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
typicms/core
source listed>= 16.0.0, < 16.1.7
#### I. Summary A Stored Cross-Site Scripting (XSS) vulnerability exists in the file upload module of TypiCMS. 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. #### II. Vulnerability Details * **Vulnerability Type:** Stored Cross-Site Scripting (XSS) (CWE-79) * **Affected Component:** `TypiCMS\Modules\Core\Http\Requests\FileFormRequest.php` and `TypiCMS\Modules\Core\Services\FileUploader.php`. * **Affected Versions:** <= 16.0.5 The vulnerability stems from two main points: 1. **Permissive File Validat
typicms/core
source listed>= 15.0.0, < 15.0.29
#### I. Summary A Stored Cross-Site Scripting (XSS) vulnerability exists in the file upload module of TypiCMS. 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. #### II. Vulnerability Details * **Vulnerability Type:** Stored Cross-Site Scripting (XSS) (CWE-79) * **Affected Component:** `TypiCMS\Modules\Core\Http\Requests\FileFormRequest.php` and `TypiCMS\Modules\Core\Services\FileUploader.php`. * **Affected Versions:** <= 16.0.5 The vulnerability stems from two main points: 1. **Permissive File Validat
typicms/core
source listed>= 14.0.0, < 14.0.27
#### I. Summary A Stored Cross-Site Scripting (XSS) vulnerability exists in the file upload module of TypiCMS. 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. #### II. Vulnerability Details * **Vulnerability Type:** Stored Cross-Site Scripting (XSS) (CWE-79) * **Affected Component:** `TypiCMS\Modules\Core\Http\Requests\FileFormRequest.php` and `TypiCMS\Modules\Core\Services\FileUploader.php`. * **Affected Versions:** <= 16.0.5 The vulnerability stems from two main points: 1. **Permissive File Validat
typicms/core
source listed>= 13.0.0, < 13.0.9
#### I. Summary A Stored Cross-Site Scripting (XSS) vulnerability exists in the file upload module of TypiCMS. 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. #### II. Vulnerability Details * **Vulnerability Type:** Stored Cross-Site Scripting (XSS) (CWE-79) * **Affected Component:** `TypiCMS\Modules\Core\Http\Requests\FileFormRequest.php` and `TypiCMS\Modules\Core\Services\FileUploader.php`. * **Affected Versions:** <= 16.0.5 The vulnerability stems from two main points: 1. **Permissive File Validat
typicms/core
source listed< 12.0.5
#### I. Summary A Stored Cross-Site Scripting (XSS) vulnerability exists in the file upload module of TypiCMS. 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. #### II. Vulnerability Details * **Vulnerability Type:** Stored Cross-Site Scripting (XSS) (CWE-79) * **Affected Component:** `TypiCMS\Modules\Core\Http\Requests\FileFormRequest.php` and `TypiCMS\Modules\Core\Services\FileUploader.php`. * **Affected Versions:** <= 16.0.5 The vulnerability stems from two main points: 1. **Permissive File Validat
typicms/core
source listedECOSYSTEM: introduced 16.0.0; fixed 16.1.7
#### I. Summary A Stored Cross-Site Scripting (XSS) vulnerability exists in the file upload module of TypiCMS. 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. #### II. Vulnerability Details * **Vulnerability Type:** Stored Cross-Site Scripting (XSS) (CWE-79) * **Affected Component:** `TypiCMS\Modules\Core\Http\Requests\FileFormRequest.php` and `TypiCMS\Modules\Core\Services\FileUploader.php`. * **Affected Versions:** <= 16.0.5 The vulnerability stems from two main points: 1. **Permissive File Validat
typicms/core
source listedECOSYSTEM: introduced 15.0.0; fixed 15.0.29
#### I. Summary A Stored Cross-Site Scripting (XSS) vulnerability exists in the file upload module of TypiCMS. 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. #### II. Vulnerability Details * **Vulnerability Type:** Stored Cross-Site Scripting (XSS) (CWE-79) * **Affected Component:** `TypiCMS\Modules\Core\Http\Requests\FileFormRequest.php` and `TypiCMS\Modules\Core\Services\FileUploader.php`. * **Affected Versions:** <= 16.0.5 The vulnerability stems from two main points: 1. **Permissive File Validat
typicms/core
source listedECOSYSTEM: introduced 14.0.0; fixed 14.0.27
#### I. Summary A Stored Cross-Site Scripting (XSS) vulnerability exists in the file upload module of TypiCMS. 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. #### II. Vulnerability Details * **Vulnerability Type:** Stored Cross-Site Scripting (XSS) (CWE-79) * **Affected Component:** `TypiCMS\Modules\Core\Http\Requests\FileFormRequest.php` and `TypiCMS\Modules\Core\Services\FileUploader.php`. * **Affected Versions:** <= 16.0.5 The vulnerability stems from two main points: 1. **Permissive File Validat
typicms/core
source listedECOSYSTEM: introduced 13.0.0; fixed 13.0.9
#### I. Summary A Stored Cross-Site Scripting (XSS) vulnerability exists in the file upload module of TypiCMS. 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. #### II. Vulnerability Details * **Vulnerability Type:** Stored Cross-Site Scripting (XSS) (CWE-79) * **Affected Component:** `TypiCMS\Modules\Core\Http\Requests\FileFormRequest.php` and `TypiCMS\Modules\Core\Services\FileUploader.php`. * **Affected Versions:** <= 16.0.5 The vulnerability stems from two main points: 1. **Permissive File Validat
typicms/core
source listedECOSYSTEM: introduced 0; fixed 12.0.5
#### I. Summary A Stored Cross-Site Scripting (XSS) vulnerability exists in the file upload module of TypiCMS. 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. #### II. Vulnerability Details * **Vulnerability Type:** Stored Cross-Site Scripting (XSS) (CWE-79) * **Affected Component:** `TypiCMS\Modules\Core\Http\Requests\FileFormRequest.php` and `TypiCMS\Modules\Core\Services\FileUploader.php`. * **Affected Versions:** <= 16.0.5 The vulnerability stems from two main points: 1. **Permissive File Validat
03 / Response
What to do next
- investigate
Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. FIRST EPSS
- vendor patch
The original advisory lists fixed boundaries 16.1.7 for typicms/core. Confirm the publisher’s latest guidance.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database via OSV
- vendor patch
The original advisory lists fixed boundaries 15.0.29 for typicms/core. Confirm the publisher’s latest guidance.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database via OSV
- vendor patch
The original advisory lists fixed boundaries 14.0.27 for typicms/core. Confirm the publisher’s latest guidance.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database via OSV
- vendor patch
The original advisory lists fixed boundaries 13.0.9 for typicms/core. Confirm the publisher’s latest guidance.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database via OSV
- vendor patch
The original advisory lists fixed boundaries 12.0.5 for typicms/core. Confirm the publisher’s latest guidance.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database via OSV
A fixed release is not deployment evidence.
Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.
04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
- NVD lastModified does not establish freshness of every associated CPE record.
05 / Provenance
Sources you can inspect
Each assertion retains its source. Mirrored records may repeat one underlying publisher; additional links are not independent corroboration.
- GHSA-xfvg-8v67-j7wp ↗
GitHub Advisory Database · vendor advisory
Observed . GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.
- GHSA-xfvg-8v67-j7wp ↗
GitHub Advisory Database via OSV · vendor advisory
Observed . GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.
- CVE-2026-27621 ↗
NIST National Vulnerability Database · official catalog
Observed . This product uses data from the NVD API but is not endorsed or certified by the NVD.
- CVE-2026-27621 ↗
FIRST EPSS · official catalog
Observed . FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.
Public revision history
Only published revisions appear here. Routine fetches do not create a material-change event.
- Revision 5 ·
Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.
- Revision 4 ·
Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.
- Revision 3 ·
Source facts changed; compare the preserved prior revision.
- Revision 2 ·
Source facts changed; compare the preserved prior revision.
- Revision 1 ·
First indexed by Null; source disclosure date is shown separately.