CVE-2021-41809

LOWNVD 3.54.3▲

3.5

SSRF vulnerability in M-Files Server products with versions before 22.1.11017.1, in a preview function allowed making queries from the server with certain document types referencing external entities.

CVSS v3: 3.5
EG Score: 4.3(medium)
EPSS: 35.1%
KEV: Not listed

Published

January 18, 2022

Last Modified

February 23, 2026

References (3)

security@m-fileshttps://empower.m-files.com/security-advisories/CVE-2021-41809
security@m-fileshttps://www.m-files.com/about/trust-center/security-vulnerabilities/cve-2021-41809/
af854a3a-2127-422b-91ae-364da2661108https://www.m-files.com/about/trust-center/security-vulnerabilities/cve-2021-41809/

Weakness Classification(1)

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

CWE-918Server-Side Request Forgery (SSRF)

Data Freshness Timeline

(refreshed 11× in last 7d / 20× 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 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
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
2026-05-26 04:39 UTCEG score recompute
2026-05-26 04:39 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2021-41809?

CVE-2021-41809 is a low vulnerability published on January 18, 2022. SSRF vulnerability in M-Files Server products with versions before 22.1.11017.1, in a preview function allowed making queries from the server with certain document types referencing external entities.

When was CVE-2021-41809 disclosed?

CVE-2021-41809 was first published in the National Vulnerability Database on January 18, 2022, with the most recent update on February 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-41809 actively exploited?

CVE-2021-41809 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 35.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-41809?

CVE-2021-41809 has a CVSS v3 base score of 3.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 4.3.

How do I remediate CVE-2021-41809?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-41809, 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

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CVE-2021-41809

📅 Published

🔄 Last Modified

🔗 References (3)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-41809?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (3)

Frequently asked(5)

Related CVEs(same CWE)