CVE-2021-26030 json
[20210401] - Core - Escape xss in logo parameter error pages
published 2021-04-14 5 y ago modified 2026-09-08 2 mo ago also BIT-joomla-2021-26030 , EUVD-2021-12853
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 82.8%
- EPSS 82.8% chance of exploitation in 30 days, percentile 99.6%
- public exploits
- 0
- none known
Summary
An issue was discovered in Joomla! 3.0.0 through 3.9.25. Inadequate escaping allowed XSS attacks using the logo parameter of the default templates on error page
Exploit prediction
82.79% chance of exploitation in the next 30 days, higher than 99.6% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
| OSV | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | joomla | >=3.0.0, <=3.9.25 |
no fix listed |
Affected products
- Joomla! Project Joomla! CMS
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
Sources
- CVE List CVE-2021-26030
- NVD CVE-2021-26030
- OSV BIT-joomla-2021-26030
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