CVE Vulnerability

CVE-2021-32681

Wagtail is an open source content management system built on Django. A cross-site scripting vulnerability exists in versions 2.13-2.13.1, versions 2.12-2.12.4, and versions prior to 2.11.8. When the `{% include_block %}` template tag is used to output the value of a plain-text StreamField block (`CharBlock`, `TextBlock` or a similar user-defined block derived from `FieldBlock`), and that block does not specify a template for rendering, the tag output is not properly escaped as HTML. This could allow users to insert arbitrary HTML or scripting. This vulnerability is only exploitable by users with the ability to author StreamField content (i.e. users with 'editor' access to the Wagtail admin). Patched versions have been released as Wagtail 2.11.8 (for the LTS 2.11 branch), Wagtail 2.12.5, and Wagtail 2.13.2 (for the current 2.13 branch). As a workaround, site implementors who are unable to upgrade to a current supported version should audit their use of `{% include_block %}` to ensure it is not used to output `CharBlock` / `TextBlock` values with no associated template. Note that this only applies where `{% include_block %}` is used directly on that block (uses of `include_block` on a block _containing_ a CharBlock / TextBlock, such as a StructBlock, are unaffected). In these cases, the tag can be replaced with Django's `{{ ... }}` syntax - e.g. `{% include_block my_title_block %}` becomes `{{ my_title_block }}`.

3.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 6.8 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

5.4 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References
Link Resource
https://github.com/wagtail/wagtail/releases/tag/v2.11.8 Exploit Third Party Advisory
https://github.com/wagtail/wagtail/releases/tag/v2.12.5 Exploit Third Party Advisory
https://github.com/wagtail/wagtail/security/advisories/GHSA-xfrw-hxr5-ghqf Mitigation Third Party Advisory
https://github.com/wagtail/wagtail/releases/tag/v2.13.2 Exploit Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:torchbox:wagtail:*:*:*:*:*:*:*:*
cpe:2.3:a:torchbox:wagtail:*:*:*:*:*:*:*:*
cpe:2.3:a:torchbox:wagtail:*:*:*:*:*:*:*:*
Information

Published : 2021-06-17 05:15

Updated : 2021-06-23 12:28

NVD link : CVE-2021-32681

Mitre link : CVE-2021-32681

Products Affected
No products.
CWE
CWE-79