What is CVE-2021-27731?

CVE-2021-27731 is a medium-severity vulnerability in Accellion Fta, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-03-02.

How severe is CVE-2021-27731?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2021-27731 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Accellion Fta

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.007 (49.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Accellion Fta
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

accellion/CVEs

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-27731?: CVE-2021-27731 is a medium-severity vulnerability in Accellion Fta, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-03-02.
How severe is CVE-2021-27731?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2021-27731 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.