CVE-2021-27375 json
Traefik before 2.4.5 allows the loading of IFRAME elements from other domains.
published 2021-02-18 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-14133
- cvss
- 5.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known
Summary
Traefik before 2.4.5 allows the loading of IFRAME elements from other domains.
Patch / fix
- containous traefik 2.4.5
- traefik Arch Linux 2.4.8-1
arch linux advisories AVG-1591
- github.com/traefik/traefik#7904 pull request
- github.com/traefik/traefik/releases/tag/v2.4.5 release
Exploit prediction
0.77% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-1021 Improper Restriction of Rendered UI Layers or Frames
References
-
github.com
/traefik/traefik/pull/7904
patch, third-party-advisory
-
github.com
/traefik/traefik/releases/tag/v2.4.5
release-notes
Sources
- CVE List CVE-2021-27375
- NVD CVE-2021-27375
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.