A file upload functionality in Piranha CMS 11.1 allows authenticated remote attackers to…
Priority MEDIUM 55CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
A file upload functionality in Piranha CMS 11.1 allows authenticated remote attackers to upload a crafted PDF file to /manager/media. This PDF can contain malicious JavaScript code, which is executed when a victim user opens or interacts with the PDF in their web browser, leading to a XSS vulnerability.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00507 43rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | Piranha (NuGet) | up to 11.1.0 | — | No fix listed | GHSA-cmwp-442x-3rcv |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- Piranha (NuGet) Vendor— Affected up to 11.1.0 Fixed in — No fix listed GHSA-cmwp-442x-3rcv
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:dotnetfoundation:piranha_cms:11.1:*:*:*:*:*:*:* | 11.1 | Vulnerable | Dotnetfoundation |
- cpe:2.3:a:dotnetfoundation:piranha_cms:11.1:*:*:*:*:*:*:* Versions 11.1 Vulnerable ·Dotnetfoundation
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2024-55342
- 2026-10-03 Alias added: GHSA-cmwp-442x-3rcv
References
More Dotnetfoundation Piranha Cms vulnerabilities
- TI-2021-07982 Piranha CMS - Site-wide Cross-Site Request Forgery (CSRF) CVSS 3.1HIGH 8.1
- TI-2025-35603 PiranhaCMS 12.0 allows stored XSS in the Text content block of Standard and Standard… CVSS 3.1MEDIUM 6.8
- TI-2025-41186 A stored cross-site scripting (XSS) vulnerability in the Media module of Piranha CMS… CVSS 3.1MEDIUM 6.1
- TI-2025-41185 A stored cross-site scripting (XSS) vulnerability in the Page Settings module of Piranha… CVSS 3.1MEDIUM 6.1
- TI-2025-37989 A stored cross-site scripting (XSS) vulnerability in the /manager/pages component of… CVSS 3.1MEDIUM 6.1
- TI-2021-07983 Piranha CMS - Stored XSS in Page Title CVSS 3.1MEDIUM 5.4
Sources
- CVE-2024-55342 · CVE Program
- CVE-2024-55342 · NVD
- FIRST EPSS
- GHSA-cmwp-442x-3rcv · GitHub Advisory Database · CC BY 4.0
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