CVE-2020-15138 - CVE House
Back to Database
Status published High CVE-2020-15138

Cross-Site Scripting in Prism

Vulnerability Description

Prism is vulnerable to Cross-Site Scripting. The easing preview of the Previewers plugin has an XSS vulnerability that allows attackers to execute arbitrary code in Safari and Internet Explorer. This impacts all Safari and Internet Explorer users of Prism >=v1.1.0 that use the _Previewers_ plugin (>=v1.10.0) or the _Previewer: Easing_ plugin (v1.1.0 to v1.9.0). This problem is fixed in version 1.21.0. To workaround the issue without upgrading, disable the easing preview on all impacted code blocks. You need Prism v1.10.0 or newer to apply this workaround.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2020-15138

Credits & Attribution

No credits recorded in the NVD database.

References

More from PrismJS

View All →
CVE-2024-53382
Prism (aka PrismJS) through 1.29.0 allows DOM Clobbering (with resultant...
Medium 4.9
CVE-2022-23647
Cross-site Scripting in Prism
High 7.5
CVE-2021-32723
Regular Expression Denial of Service (ReDoS) in Prism
High 7.4

Affected Vendor

Affected Software

prism
Vulnerable Versions:
>= 1.1.0, < 1.21.0

Timeline

Official Publish: August 7th, 2020
Last Modified: August 4th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L

Weaknesses (CWE)

CWE-79

MITRE ATT&CK TTPs

T1189 Drive-by Compromise
Initial Access
T1059.007 JavaScript
Execution
T1539 Steal Web Session Cookie
Collection
T1213 Data from Information Repositories
Collection
T1567 Exfiltration Over Web Service
Exfiltration
T1491.001 Defacement
Impact