CVE-2020-21316

Name: CVE-2020-21316
Creator: NVD / NIST
Published: 2021-06-15T20:15:11.3+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 1.12%

Last modified Jun 17, 2026

CVE-2020-21316 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. A Cross-site scripting (XSS) vulnerability exists in the comment section in ZrLog 2.1.3, which allows remote attackers to inject arbitrary web script and stolen administrator cookies via the nickname parameter and gain access to the admin panel.. EPSS estimates a 1.12% chance of exploitation in the next 30 days.

Description

A Cross-site scripting (XSS) vulnerability exists in the comment section in ZrLog 2.1.3, which allows remote attackers to inject arbitrary web script and stolen administrator cookies via the nickname parameter and gain access to the admin panel.

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

1.12%

62.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Zrlog	Zrlog	2.1.3

References

https://gist.github.com/T-pod/d9405dbd61243990d65d55c5df0fcbe6Patch, Third Party Advisory
https://github.com/94fzb/zrlog/commit/b921c1ae03b8290f438657803eee05226755c941Patch, Third Party Advisory
https://github.com/94fzb/zrlog/issues/56Patch, Third Party Advisory
https://gist.github.com/T-pod/d9405dbd61243990d65d55c5df0fcbe6Patch, Third Party Advisory
https://github.com/94fzb/zrlog/commit/b921c1ae03b8290f438657803eee05226755c941Patch, Third Party Advisory
https://github.com/94fzb/zrlog/issues/56Patch, Third Party Advisory

Timeline

Published: Jun 15, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-21316?

How severe is CVE-2020-21316?

CVE-2020-21316 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.12% probability of exploitation in the next 30 days.

How do I fix CVE-2020-21316?

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-2020-21316?

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

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Source: NVD / NIST