CVE-2020-10184

Name: CVE-2020-10184
Creator: NVD / NIST
Published: 2020-03-05T23:15:13.277+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.50%

Last modified Jun 17, 2026

CVE-2020-10184 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 1.50% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.50%

71.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-89

Affected Software

Vendor	Product	Versions
Yubico	Yubikey One Time Password Validation Server	< 2.40

References

https://github.com/Yubico/yubikey-val/releases/tag/yubikey-val-2.40Release Notes, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/03/msg00014.html
https://www.yubico.com/support/security-advisories/ysa-2020-01/Exploit, Vendor Advisory
https://github.com/Yubico/yubikey-val/releases/tag/yubikey-val-2.40Release Notes, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/03/msg00014.html
https://www.yubico.com/support/security-advisories/ysa-2020-01/Exploit, Vendor Advisory

Timeline

Published: Mar 5, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-10184?

How severe is CVE-2020-10184?

CVE-2020-10184 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.50% probability of exploitation in the next 30 days.

How do I fix CVE-2020-10184?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-10184?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST