What is CVE-2022-3873?

CVE-2022-3873 is a medium-severity vulnerability in Diagrams Drawio, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-11-07.

How severe is CVE-2022-3873?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2022-3873 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Diagrams Drawio

CVE-2022-3873

Cross-site Scripting (XSS) - DOM in GitHub repository jgraph/drawio prior to 20.5.2.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-11-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (50.7th percentile), scored 2026-09-23.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.000

Affected products

Diagrams Drawio
Jgraph Jgraph/drawio — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

huntr.dev/bounties/52a4085e-b687-489b-9ed6-f0987583ed77 (Exploit, Patch, Third Party Advisory)
github.com/jgraph/drawio/commit/d37894baf125430e85840c2635563b10d1a6523d (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-3873?: CVE-2022-3873 is a medium-severity vulnerability in Diagrams Drawio, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-11-07.
How severe is CVE-2022-3873?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2022-3873 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.