CVE-2020-13121

Name: CVE-2020-13121
Creator: NVD / NIST
Published: 2020-05-16T20:15:12+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 3.52%

Last modified Jun 17, 2026

CVE-2020-13121 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Submitty through 20.04.01 has an open redirect via authentication/login?old= during an invalid login attempt.. EPSS estimates a 3.52% chance of exploitation in the next 30 days.

Description

Submitty through 20.04.01 has an open redirect via authentication/login?old= during an invalid login attempt.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

3.52%

87.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-601

Affected Software

Vendor	Product	Versions
Rcos	Submitty	<= 20.04.01

References

https://github.com/Submitty/Submitty/issues/5265Exploit, Issue Tracking, Third Party Advisory
https://github.com/Submitty/Submitty/issues/5265Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: May 16, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-13121?

Submitty through 20.04.01 has an open redirect via authentication/login?old= during an invalid login attempt.

How severe is CVE-2020-13121?

CVE-2020-13121 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 3.52% probability of exploitation in the next 30 days.

How do I fix CVE-2020-13121?

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-2020-13121?

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

Scan your code now

Source: NVD / NIST