What is CVE-2021-21087?

CVE-2021-21087 is a medium-severity vulnerability in Adobe Coldfusion, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-04-15.

How severe is CVE-2021-21087?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Is CVE-2021-21087 known to be exploited?

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

XSS in Adobe Coldfusion

CVE-2021-21087

Adobe Coldfusion versions 2016 (update 16 and earlier), 2018 (update 10 and earlier) and 2021.0.0.323925 are affected by an Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability. An attacker cou…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.842 (99.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Adobe Coldfusion — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

helpx.adobe.com/security/products/coldfusion/apsb21-16.html (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-21087?: CVE-2021-21087 is a medium-severity vulnerability in Adobe Coldfusion, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-04-15.
How severe is CVE-2021-21087?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2021-21087 known to be exploited?: 11 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.