CVE-2021-30140 Cross-site scripting in n/a
Stored XSS in LiquidFiles allows attackers to execute malicious scripts in an administrator's browser via crafted file uploads.
- 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-2021-30140?
CVE-2021-30140 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
LiquidFiles 3.4.15 has stored XSS through the "send email" functionality when sending a file via email to an administrator. When a file has no extension and contains malicious HTML / JavaScript content (such as SVG with HTML content), the payload is executed upon a click. This is fixed in 3.5.
Weakness: CWE-79
Which versions are affected by CVE-2021-30140?
It affects 1 product.
Products include Liquidfiles Liquidfiles.
How do I fix CVE-2021-30140?
No fix has been published for CVE-2021-30140 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-2021-30140 being exploited?
There is no known exploitation of CVE-2021-30140 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2025-46093 Privilege escalation in LiquidFiles
- CVE-2020-29071 Cross-site scripting in n/a
- CVE-2021-43397 LiquidFiles before 3.6.3 allows remote attackers to elevate their privileges from Admin (or User Admin) to Sysadmin.
- CVE-2025-56132 Information disclosure in n/a
- CVE-2020-29072 Information disclosure in n/a
Sources
Also known as GHSA-4f76-8jp4-59r6.