CVE-2021-27731
MEDIUMCVSS 6.1/10EPSS 0.72%
Last modified
CVE-2021-27731 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Accellion FTA 9_12_432 and earlier is affected by stored XSS via a crafted POST request to a user endpoint. The fixed version is FTA_9_12_444 and later.. EPSS estimates a 0.72% chance of exploitation in the next 30 days.
Description
Accellion FTA 9_12_432 and earlier is affected by stored XSS via a crafted POST request to a user endpoint. The fixed version is FTA_9_12_444 and later.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Accellion | Fta | <= 9_12_432 |
References
- https://github.com/accellion/CVEs/blob/main/CVE-2021-27731.txtThird Party Advisory
- https://github.com/accellion/CVEs/blob/main/CVE-2021-27731.txtThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-27731?
Accellion FTA 9_12_432 and earlier is affected by stored XSS via a crafted POST request to a user endpoint. The fixed version is FTA_9_12_444 and later.
How severe is CVE-2021-27731?
CVE-2021-27731 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.72% probability of exploitation in the next 30 days.
How do I fix CVE-2021-27731?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-27731?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST