What’s Vulnerable › Vulnerabilities

CVE-2020-22453

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-09-24 · updated 2026-06-17
• Weakness: CWE-79

Description

Untis WebUntis before 2020.9.6 allows XSS in multiple functions that store information.

Affected products

• Untis Webuntis: before 2020.9.6 — fixed in 2020.9.6

How to fix

Upgrade to a fixed version: Untis Webuntis 2020.9.6. Check the vendor advisory for mitigations.

References

• https://help.untis.at/hc/en-150/articles/360008456699
• https://robin.meis.space/2020/03/11/notenmanipulation-in-elektronischen-klassenbuchern/
• https://help.untis.at/hc/en-150/articles/360008456699
• https://robin.meis.space/2020/03/11/notenmanipulation-in-elektronischen-klassenbuchern/

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