CVE-2020-15227

Name: CVE-2020-15227
Creator: NVD / NIST
Published: 2020-10-01T19:15:12.797+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 35.23%

Last modified Jun 17, 2026

CVE-2020-15227 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Nette versions before 2.0.19, 2.1.13, 2.2.10, 2.3.14, 2.4.16, 3.0.6 are vulnerable to an code injection attack by passing specially formed parameters to URL that may possibly leading to RCE. Nette is a PHP/Composer MVC Framework.. EPSS estimates a 35.23% chance of exploitation in the next 30 days.

Description

Nette versions before 2.0.19, 2.1.13, 2.2.10, 2.3.14, 2.4.16, 3.0.6 are vulnerable to an code injection attack by passing specially formed parameters to URL that may possibly leading to RCE. Nette is a PHP/Composer MVC Framework.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

35.23%

98.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Nette	Application	>= 2.0.0, < 2.0.19
Nette	Application	>= 2.1.0, < 2.1.13
Nette	Application	>= 2.2.0, < 2.2.10
Nette	Application	>= 2.3.0, < 2.3.14
Nette	Application	>= 2.4.0, < 2.4.16
Nette	Application	>= 3.0.0, < 3.0.6
Debian	Debian Linux	9.0

References

https://github.com/nette/application/security/advisories/GHSA-8gv3-3j7f-wg94Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00003.htmlMailing List, Third Party Advisory
https://packagist.org/packages/nette/applicationThird Party Advisory
https://packagist.org/packages/nette/netteThird Party Advisory
https://github.com/nette/application/security/advisories/GHSA-8gv3-3j7f-wg94Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00003.htmlMailing List, Third Party Advisory
https://packagist.org/packages/nette/applicationThird Party Advisory
https://packagist.org/packages/nette/netteThird Party Advisory

Timeline

Published: Oct 1, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-15227?

How severe is CVE-2020-15227?

CVE-2020-15227 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 35.23% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15227?

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-2020-15227?

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

Scan your code now

Source: NVD / NIST