An Unrestricted Upload vulnerability, due to insufficient validation on…
Priority HIGH 82CWE-434Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-434.
Summary
An Unrestricted Upload vulnerability, due to insufficient validation on UploadControlled.cs file, in BlogEngine.Net version 3.3.8.0 and earlier allows remote attackers to execute remote code.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.25782 97th 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
- Yes
- Technical impact
- Total
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 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:blogengine:blogengine.net:*:*:*:*:*:*:*:* | up to 3.3.8.0 | Vulnerable | BlogEngine.NET |
- cpe:2.3:a:blogengine:blogengine.net:*:*:*:*:*:*:*:* Versions up to 3.3.8.0 Vulnerable ·BlogEngine.NET
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-33404
- 2026-10-03 Alias added: GHSA-8vr7-mc5w-34ff
References
More Blogengine.net vulnerabilities
- TI-2019-04757 An issue was discovered in BlogEngine.NET through 3.3.6.0. CVSS 3.0CRITICAL 9.8
- TI-2023-16524 Blogengine.net 3.3.8.0 and earlier is vulnerable to Open Redirect. CVSS 3.1MEDIUM 6.1
- TI-2018-10391 BlogEngine.NET 3.3 allows XXE attacks via the POST body to metaweblog.axd. CVSS 3.0CRITICAL 9.8
- TI-2022-19878 BlogEngine.NET v3.3.8.0 allows an attacker to create any folder with "files" prefix under ~/App_Data/. CVSS 3.1CRITICAL 9.8
- TI-2019-07998 BlogEngine.NET 3.3.7.0 and earlier allows Directory Traversal and Remote Code Execution… CVSS 3.1HIGH 8.8
- TI-2022-09183 BlogEngine.NET v3.3.8.0 was discovered to contain an arbitrary file deletion… CVSS 3.1CRITICAL 9.1
Sources
- CVE-2023-33404 · CVE Program
- CVE-2023-33404 · NVD
- FIRST EPSS
- GHSA-8vr7-mc5w-34ff · GitHub Advisory Database · CC BY 4.0
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