CVE-2020-35124 json
XSS vulnerability leveraged through referrers could allow un-authorized admin access in Mautic
published 2021-01-19 5 y ago modified 2026-07-08 4 mo ago also GHSA-39wj-j3jc-858m , EUVD-2021-0482
- cvss
- 9.6
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.4%
- EPSS 2.4% chance of exploitation in 30 days, percentile 84%
- public exploits
- 0
- none known
Summary
A cross-site scripting (XSS) vulnerability in the assets component of Mautic before 3.2.4 allows remote attackers to inject executable JavaScript through the Referer header of asset downloads.
Patch / fix
Exploit prediction
2.43% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | mautic/core | >=3.0.0, <3.2.4 >=2.0.0, <2.16.5 |
3.2.4 2.16.5 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/mautic/mautic/commit/20c5dc39b62164f6922ce53ea42cbb4ccec64e57
web
-
forum.mautic.org
/c/announcements/16
web, vendor-advisory
-
mautic.org
/blog/community/security-release-all-versions-mautic-prior-2-16-5-and-3-2-4
web, release-notes, third-party-advisory
-
horizon3.ai
/disclosures/mautic-unauth-xss-to-rce
web, third-party-advisory
-
github.com
/mautic/mautic/security/advisories/GHSA-39wj-j3jc-858m
web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-35124
advisory
-
github.com
/FriendsOfPHP/security-advisories/blob/master/mautic/core/CVE-2020-35124.yaml
web
-
packagist.org
/packages/mautic/core
web
Sources
- CVE List CVE-2020-35124
- GitHub Advisory GHSA-39wj-j3jc-858m
- NVD CVE-2020-35124
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