CVE-2019-19493

MEDIUMNVD 5.45.4—Elevated

5.4

Kentico before 12.0.50 allows file uploads in which the Content-Type header is inconsistent with the file extension, leading to XSS.

CVSS v3: 5.4
EG Score: 5.4(medium)
EPSS: 68.3%
KEV: Not listed

Published

December 2, 2019

Last Modified

December 19, 2025

References (4)

cve@mitrehttp://packetstormsecurity.com/files/159525/Kentico-CMS-9.0-12.0.49-Cross-Site-Scripting.html
cve@mitrehttps://devnet.kentico.com/download/hotfixes
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/159525/Kentico-CMS-9.0-12.0.49-Cross-Site-Scripting.html
af854a3a-2127-422b-91ae-364da2661108https://devnet.kentico.com/download/hotfixes

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 18× 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.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-27 11:00 UTCEG score recompute
2026-05-27 11:00 UTCGHSA enrichment
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 07:17 UTCepss_batch

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-48864
First seen Oct 9, 2020
Kentico CMS 9.0-12.0.49 - Persistent Cross Site Scripting
Open source ↗

Frequently asked(5)

What is CVE-2019-19493?

CVE-2019-19493 is a medium vulnerability published on December 2, 2019. Kentico before 12.0.50 allows file uploads in which the Content-Type header is inconsistent with the file extension, leading to XSS.

When was CVE-2019-19493 disclosed?

CVE-2019-19493 was first published in the National Vulnerability Database on December 2, 2019, with the most recent update on December 19, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2019-19493 actively exploited?

CVE-2019-19493 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 68.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2019-19493?

CVE-2019-19493 has a CVSS v3 base score of 5.4 (NVD).

How do I remediate CVE-2019-19493?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-19493, 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-2019-19493

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