CVE-2021-3694

Cross-site Scripting (XSS) - Reflected in ledgersmb/ledgersmb

Description

LedgerSMB does not sufficiently HTML-encode error messages sent to the browser. By sending a specially crafted URL to an authenticated user, this flaw can be abused for remote code execution and information disclosure.

Category

8.2
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.85% Top 30%
Vendor Advisory debian.org Vendor Advisory ledgersmb.org
Affected: ledgersmb ledgersmb/ledgersmb
Published at:
Updated at:

References

Link Tags
https://huntr.dev/bounties/ef7f4cf7-3a81-4516-b261-f5b6ac21430c third party advisory
https://github.com/ledgersmb/ledgersmb/commit/98fa476d46a4a7e5e9492ed69b4fa190be5547fc third party advisory patch
https://ledgersmb.org/cve-2021-3694-cross-site-scripting vendor advisory
https://www.debian.org/security/2021/dsa-4962 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-3694?
CVE-2021-3694 has been scored as a high severity vulnerability.
How to fix CVE-2021-3694?
To fix CVE-2021-3694, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-3694 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-3694 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-3694?
CVE-2021-3694 affects ledgersmb ledgersmb/ledgersmb.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.