CVE-2020-35124

CRITICALNVD 9.69.6—

9.6

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.

CVSS v3: 9.6
EG Score: 9.6(medium)
EPSS: 78.7%
KEV: Not listed

Published

January 28, 2021

Last Modified

November 21, 2024

References (8)

cve@mitrehttps://forum.mautic.org/c/announcements/16
cve@mitrehttps://github.com/mautic/mautic/security/advisories/GHSA-39wj-j3jc-858m
cve@mitrehttps://www.horizon3.ai/disclosures/mautic-unauth-xss-to-rce
cve@mitrehttps://www.mautic.org/blog/community/security-release-all-versions-mautic-prior-2-16-5-and-3-2-4
af854a3a-2127-422b-91ae-364da2661108https://forum.mautic.org/c/announcements/16
af854a3a-2127-422b-91ae-364da2661108https://github.com/mautic/mautic/security/advisories/GHSA-39wj-j3jc-858m
af854a3a-2127-422b-91ae-364da2661108https://www.horizon3.ai/disclosures/mautic-unauth-xss-to-rce
af854a3a-2127-422b-91ae-364da2661108https://www.mautic.org/blog/community/security-release-all-versions-mautic-prior-2-16-5-and-3-2-4

Affected Packages

(1 across 1 ecosystem)

Packagist(1)

Package	Vulnerable range	Fixed in	Dependents
mautic/core	2.0.0 ... 2.9.2 (58 versions)	2.16.5	—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-79Cross-site Scripting (XSS)

Data Freshness Timeline

(refreshed 8× in last 7d / 8× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 21:33 UTCEG score recompute
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 05:46 UTCOSV refresh

Frequently asked(5)

What is CVE-2020-35124?

CVE-2020-35124 is a critical vulnerability published on January 28, 2021. 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.

When was CVE-2020-35124 disclosed?

CVE-2020-35124 was first published in the National Vulnerability Database on January 28, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-35124 actively exploited?

CVE-2020-35124 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 78.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-35124?

CVE-2020-35124 has a CVSS v3 base score of 9.6 (NVD).

How do I remediate CVE-2020-35124?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-35124, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-35124

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