CVE-2021-27375

Name: CVE-2021-27375
Creator: NVD / NIST
Published: 2021-02-18T03:15:12.72+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.77%

Last modified Jun 17, 2026

CVE-2021-27375 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Traefik before 2.4.5 allows the loading of IFRAME elements from other domains.. EPSS estimates a 0.77% chance of exploitation in the next 30 days.

Description

Traefik before 2.4.5 allows the loading of IFRAME elements from other domains.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS Probability

0.77%

50.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1021

Affected Software

Vendor	Product	Versions
Containous	Traefik	< 2.4.5

References

https://github.com/traefik/traefik/pull/7904Patch, Third Party Advisory
https://github.com/traefik/traefik/releases/tag/v2.4.5Release Notes
https://github.com/traefik/traefik/pull/7904Patch, Third Party Advisory
https://github.com/traefik/traefik/releases/tag/v2.4.5Release Notes

Timeline

Published: Feb 18, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-27375?

Traefik before 2.4.5 allows the loading of IFRAME elements from other domains.

How severe is CVE-2021-27375?

CVE-2021-27375 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.77% probability of exploitation in the next 30 days.

How do I fix CVE-2021-27375?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-27375?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST