What’s Vulnerable › Vulnerabilities

CVE-2018-20858

• Severity: medium (CVSS 6.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-08-09 · updated 2026-06-17
• Weakness: CWE-79

Description

Recommender before 2018-07-18 allows XSS.

Affected products

• Edx Recommender: before 1.3.1 — fixed in 1.3.1

How to fix

Upgrade to a fixed version: Edx Recommender 1.3.1. Check the vendor advisory for mitigations.

References

• https://github.com/edx/RecommenderXBlock/pull/2
• https://groups.google.com/forum/#%21topic/openedx-announce/SF8Sn6MuUTg
• https://github.com/edx/RecommenderXBlock/pull/2
• https://groups.google.com/forum/#%21topic/openedx-announce/SF8Sn6MuUTg

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