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CVE-2020-11083

Stored XSS in October

MEDIUM
4.8
CVSS Score
Published: July 14, 2020 at 08:55 PM UTC
Updated: June 17, 2026 at 02:49 AM UTC
1 product affected across 1 vendorOctober

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Severity
MEDIUM4.8
Exploit prediction
EPSS 1%

Description

In October from version 1.0.319 and before version 1.0.466, a user with access to a markdown FormWidget that stores data persistently could create a stored XSS attack against themselves and any other users with access to the generated HTML from the field. This has been fixed in 1.0.466. For users of the RainLab.Blog plugin, this has also been fixed in 1.4.1.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

October· Octobercmscomposer
95%
v < 1.0.4661.0.319 ≤ v < 1.0.466
Affected range stops below 1.0.466, so it looks safe — our inference, not a vendor statement

References (5)

x_refsource_MISCExploitThird Party AdvisoryVDB Entry
Source: [email protected]
http://packetstormsecurity.com/files/158730/October-CMS-Build-465-XSS-File-Read-File-Deletion-CSV-Injection.html
Mailing Listx_refsource_FULLDISCExploitThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2020/Aug/2
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/octobercms/october/commit/9ecfb4867baae14a0d3f99f5b5c1e8a979ae8746
x_refsource_CONFIRMPatchThird Party Advisory
Source: [email protected]
https://github.com/octobercms/october/security/advisories/GHSA-w4pj-7p68-3vgv
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/rainlab/blog-plugin/commit/6ae19a6e16ef3ba730692bc899851342c858bb94

CVSS

4.8MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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