What’s Vulnerable › Vulnerabilities

CVE-2021-27375

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-02-18 · updated 2026-06-17
• Weakness: CWE-1021

Description

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

Affected products

• containous Traefik: before 2.4.5 — fixed in 2.4.5

How to fix

Upgrade to a fixed version: containous Traefik 2.4.5. Check the vendor advisory for mitigations.

References

• https://github.com/traefik/traefik/pull/7904
• https://github.com/traefik/traefik/releases/tag/v2.4.5
• https://github.com/traefik/traefik/pull/7904
• https://github.com/traefik/traefik/releases/tag/v2.4.5

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