In the IsolatedRazorEngine component of Antaris RazorEngine through 4.5.1-alpha001, an…
Priority MEDIUM 46CWE-1336Published · 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 and GitHub. Impact type from CWE-1336.
Summary
In the IsolatedRazorEngine component of Antaris RazorEngine through 4.5.1-alpha001, an attacker can execute arbitrary .NET code in a sandboxed environment (if users can externally control template contents). NOTE: This vulnerability only affects products that are no longer supported by the maintainer
Why it matters now
EPSS 0.01861 79th 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
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | RazorEngine (NuGet) | up to 4.5.1-alpha001 | — | No fix listed | GHSA-ph3v-2hq5-5qfq |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- RazorEngine (NuGet) Vendor— Affected up to 4.5.1-alpha001 Fixed in — No fix listed GHSA-ph3v-2hq5-5qfq
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:razorengine_project:razorengine:*:*:*:*:*:*:*:* | before 4.5.1 | Vulnerable | Razorengine Project |
| cpe:2.3:a:razorengine_project:razorengine:4.5.1:alpha001:*:*:*:*:*:* | 4.5.1 alpha001 | Vulnerable | Razorengine Project |
- cpe:2.3:a:razorengine_project:razorengine:*:*:*:*:*:*:*:* Versions before 4.5.1 Vulnerable ·Razorengine Project
- cpe:2.3:a:razorengine_project:razorengine:4.5.1:alpha001:*:*:*:*:*:* Versions 4.5.1 alpha001 Vulnerable ·Razorengine Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-46703
- 2026-10-03 Alias added: GHSA-ph3v-2hq5-5qfq
References
Sources
- CVE-2021-46703 · CVE Program
- CVE-2021-46703 · NVD
- FIRST EPSS
- GHSA-ph3v-2hq5-5qfq · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences