CVE-2020-9311

Name: CVE-2020-9311
Creator: NVD / NIST
Published: 2020-07-15T21:15:13.817+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.56%

Last modified Jun 17, 2026

CVE-2020-9311 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. In SilverStripe through 4.5, malicious users with a valid Silverstripe CMS login (usually CMS access) can craft profile information which can lead to XSS for other users through specially crafted login form URLs.. EPSS estimates a 0.56% chance of exploitation in the next 30 days.

Description

In SilverStripe through 4.5, malicious users with a valid Silverstripe CMS login (usually CMS access) can craft profile information which can lead to XSS for other users through specially crafted login form URLs.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.56%

42.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Silverstripe	Silverstripe	>= 3.0.0, < 3.7.5

References

https://www.silverstripe.org/download/security-releases/CVE-2020-9311Vendor Advisory
https://www.silverstripe.org/download/security-releases/CVE-2020-9311Vendor Advisory

Timeline

Published: Jul 15, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-9311?

How severe is CVE-2020-9311?

CVE-2020-9311 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.56% probability of exploitation in the next 30 days.

How do I fix CVE-2020-9311?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-9311?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST