CVE-2021-30146 Cross-site scripting in n/a

Medium 5.4 Published 6 Apr 2021 Updated 3 Aug 2024

Attackers can inject persistent scripts via library sharing features, potentially stealing user sessions or executing malicious code in victim browsers.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-30146?

CVE-2021-30146 is a medium-severity cross-site scripting vulnerability in n/a, published on 6 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

Seafile 7.0.5 (2019) allows Persistent XSS via the "share of library functionality."

Weakness: CWE-79

Which versions are affected by CVE-2021-30146?

It affects 1 product.

Products include Seafile Seafile.

How do I fix CVE-2021-30146?

No fix has been published for CVE-2021-30146 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-2021-30146 being exploited?

There is no known exploitation of CVE-2021-30146 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-pj73-7h6v-vg38, UBUNTU-CVE-2021-30146.