CVE-2021-21087

MEDIUMNuclei

ColdFusion Improper neutralization of web input during page generation could lead to arbitrary JavaScript execution in the browser

Title source: CVE List
STIX 2.1 vulnerability

Record summary

CVE-2021-21087 has a selected CVSS score of 5.4 (medium); EIP currently links 1 Nuclei template.

Description

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 could abuse this vulnerability to execute arbitrary JavaScript code in context of the current user. Exploitation of this issue requires user interaction.

Description source: CVE List

Exploitation context

Known exploitation

VulnCheck KEV
Listed · Nov 13, 2023 · VulnCheck
Reported exploitation
Observed · VulnCheck

Available material

Nuclei templates
1

CISA SSVC decision

ExploitationNone
AutomatableNo
Technical impactPartial

CISA Coordinator · SSVC 2.0.3 · Evaluated Apr 23, 2025 · Source: CVE List

Affected products and versions

1
ProductSourceVersion range

ColdFusion

Browse Adobe / ColdFusion
VulnCheck, CVE ListThrough 2016.16affected
Through 2018.10affected
Through 2021.0.0.323925affected
Through Noneaffected

Nuclei templates

1
ProjectDiscoveryMEDIUMAdobe ColdFusion - Cross-Site ScriptingCVSS 5.4

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 could abuse this vulnerability to execute arbitrary JavaScript code in context of the current user. Exploitation of this issue requires user interaction.

Impact

Successful exploitation of this vulnerability could allow an attacker to execute malicious scripts in the context of the victim's browser, potentially leading to session hijacking, defacement, or theft of sensitive information.

Remediation

Apply the latest security patches or updates provided by Adobe to mitigate this vulnerability.

WeaknessesCWE-79
AuthorsDaviey
Template tagscve2021cvexssadobemisccoldfusionvkevvuln
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CPE: cpe:2.3:a:adobe:coldfusion:2016:-:*:*:*:*:*:*
Shodan: http.component:"Adobe ColdFusion"
Shodan: http.component:"adobe coldfusion"
Shodan: http.title:"coldfusion administrator login"
Shodan: cpe:"cpe:2.3:a:adobe:coldfusion"
FOFA: title="coldfusion administrator login"
FOFA: app="adobe-coldfusion"
Google: intitle:"coldfusion administrator login"
https://helpx.adobe.com/security/products/coldfusion/apsb21-16.html https://twitter.com/Daviey/status/1374070630283415558 https://nvd.nist.gov/vuln/detail/CVE-2021-21087 https://github.com/ARPSyndicate/cvemon https://github.com/ARPSyndicate/kenzer-templates

Source: ProjectDiscovery

References

2