PT-2021-17656 · Craft Cms · Craft Cms

Published 2021-06-30 · Updated 2021-07-06 · CVE-2021-27902

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions: Craft CMS versions prior to 3.6.0

Description: An issue was discovered in connection with front-end forms that accepted user uploads, potentially leading to a XSS vulnerability in certain circumstances.

Recommendations: For versions prior to 3.6.0, update to version 3.6.0 or later to resolve the issue. As a temporary workaround, consider restricting the use of front-end forms that accept user uploads until a patch is available.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-27902

GHSA-3JXH-789F-P7M6

Affected Products

Craft Cms

References · 8

• https://github.com/craftcms/cms/commit/8ee85a8f03c143fa2420e7d6f311d95cae3b19ce · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-27902 · Security Note
• https://osv.dev/vulnerability/CVE-2021-27902 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-3jxh-789f-p7m6 · Vendor Advisory
• https://github.com/craftcms/cms/blob/develop/CHANGELOG.md#360---2021-01-26 · Note
• https://github.com/craftcms/cms/blob/develop/CHANGELOG.md#security-1 · Note
• https://t.me/cvenotify/16906 · Telegram Post
• https://t.me/cibsecurity/25819 · Telegram Post