How severe is CVE-2021-30140?

CVE-2021-30140 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-30140 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-30140?

CVE-2021-30140 affects Liquidfiles. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-30140?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-30140 published?

CVE-2021-30140 was published on 2021-04-06 and last updated on 2026-06-17.

CVE-2021-30140

CVE-2021-30140 is a medium-severity vulnerability in Liquidfiles with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Liquidfiles
Published: 2021-04-06
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-30140?: 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.
How severe is CVE-2021-30140?: CVE-2021-30140 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-30140 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-30140?: CVE-2021-30140 affects Liquidfiles. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-30140?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-30140 published?: CVE-2021-30140 was published on 2021-04-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:liquidfiles:liquidfiles:3.4.15:*:*:*:*:*:*:*

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