What’s Vulnerable › Vulnerabilities

CVE-2021-3731: Improper Restriction of Rendered UI Layers or Frames in ledgersmb/ledgersmb

• Severity: medium (CVSS 4.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-23 · updated 2026-06-17
• Weakness: CWE-1021

Description

LedgerSMB does not sufficiently guard against being wrapped by other sites, making it vulnerable to 'clickjacking'. This allows an attacker to trick a targetted user to execute unintended actions.

Affected products

• Debian Linux: 10.0, 11.0
• ledgersmb/ledgersmb: from 1.1.0 through 1.1.12; from 1.2.0 through 1.2.26; from 1.3.0 through 1.3.47; from 1.4.0 through 1.4.42; from 1.5.0 through 1.5.30; from 1.6.0 through 1.6.33

References

• https://huntr.dev/bounties/5664331d-f5f8-4412-8566-408f8655888a
• https://ledgersmb.org/cve-2021-3731-clickjacking
• https://www.debian.org/security/2021/dsa-4962
• https://huntr.dev/bounties/5664331d-f5f8-4412-8566-408f8655888a
• https://ledgersmb.org/cve-2021-3731-clickjacking
• https://www.debian.org/security/2021/dsa-4962

Get alerted when CVE-2021-3731 or the next vulnerability affects your stack