CVE-2021-30056 Cross-site scripting in n/a

What is CVE-2021-30056?

CVE-2021-30056 is a medium-severity cross-site scripting vulnerability in n/a, published on 5 Apr 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Knowage Suite before 7.4 is vulnerable to reflected cross-site scripting (XSS). An attacker can inject arbitrary web script in /restful-services/publish via the 'EXEC_FROM' parameter that can lead to data leakage.

Weakness: CWE-79

Which versions are affected by CVE-2021-30056?

It affects 1 product.

Products include Eng Knowage.

How do I fix CVE-2021-30056?

No fix has been published for CVE-2021-30056 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2021-30056 being exploited?

There is no known exploitation of CVE-2021-30056 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2023-38702 Knowage Server vulnerable to path traversal via upload functionality Critical 10.0
• CVE-2019-13188 Auth bypass in n/a Critical 9.8
• CVE-2025-59954 Knowage Contains a Remote Code Execution Vulnerability Critical 9.3
• CVE-2021-30055 SQL injection in n/a High 8.8
• CVE-2019-13348 Information disclosure in n/a High 8.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-2w6j-f6vj-9w6f.