Vulnerability Report

CVE-2020-10184

Title: Yubico Yubikey One Time Password Validation Server Injection (SQLi/OSi)

SQLi

Proof Of Concept

No public PoC currently indexed for CVE-2020-10184.

CWE Category CWE-89

Published Date Mar 05, 2020

Modified Date Jun 17, 2026

Exploit Status Not Found

Score 7.5 CVSS v3.1

Exploit Probability (EPSS)

1.50%

Vulnerability Summary

CVE-2020-10184: The verify endpoint in YubiKey Validation Server before 2.40 does not check the length of SQL queries, which allows remote attackers to cause a denial of service, aka SQL injection. NOTE: this issue is potentially relevant to persons outside Yubico who operate a self-hosted OTP validation service; the issue does NOT affect YubiCloud.

Impacted Vendors

yubico 1

Reference Links

https://github.com/Yubico/yubikey-val/releases/tag/yubikey-val-2.40 https://lists.debian.org/debian-lts-announce/2020/03/msg00014.html https://www.yubico.com/support/security-advisories/ysa-2020-01/ https://github.com/Yubico/yubikey-val/releases/tag/yubikey-val-2.40 https://lists.debian.org/debian-lts-announce/2020/03/msg00014.html https://www.yubico.com/support/security-advisories/ysa-2020-01/

CVSS v3.1

Source Entity [email protected]

Severity HIGH

7.5

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

5.0

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:L/Au:N/C:N/I:N/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2020-10184 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

June 17, 2026 MODIFIED

Vulnerability data updated via NVD.

November 21, 2024 MODIFIED

Vulnerability data or affected products updated.

March 05, 2020 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


                                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Stack

No specific products linked.