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CVE-2020-15227

62
FAUCET Score

CVE-2020-15227 is a critical code injection vulnerability affecting Nette framework versions prior to 2.0.19, 2.1.13, 2.2.10, 2.3.14, 2.4.16, and 3.0.6, as well as Debian applications utilizing Nette. This flaw allows unauthenticated attackers to achieve Remote Code Execution (RCE) by crafting malicious URL parameters. With a CVSS score of 9.8 (Critical), the vulnerability is easily exploitable over the network with low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. While not listed on CISA's KEV catalog, exploit intelligence indicates the existence of Nuclei templates for RCE, and the vulnerability has garnered significant community discussion, suggesting awareness and potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.0.0, < 2.0.19CPE matchmatch criteria
cpe:2.3:a:nette:application:*:*:*:*:*:*:*:*
>= 2.1.0, < 2.1.13CPE matchmatch criteria
cpe:2.3:a:nette:application:*:*:*:*:*:*:*:*
>= 2.2.0, < 2.2.10CPE matchmatch criteria
cpe:2.3:a:nette:application:*:*:*:*:*:*:*:*
>= 2.3.0, < 2.3.14CPE matchmatch criteria
cpe:2.3:a:nette:application:*:*:*:*:*:*:*:*
>= 2.4.0, < 2.4.16CPE matchmatch criteria
cpe:2.3:a:nette:application:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.7HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
5.8
CvssVersion
3.1

Exploit Intelligence

EPSS Score
35.23%
Probability of exploitation in next 30 days
EPSS Percentile
98.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2020-15227 · May 22, 2021
This CVE's current EPSS score of 0.3523 is in the 95th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

composerpatch availablevia ghsa
Product: nette/applicationFixed in: 2.2.10
composerpatch availablevia ghsa
Product: nette/applicationFixed in: 2.3.14
composerpatch availablevia ghsa
Product: nette/applicationFixed in: 2.4.16
composerpatch availablevia ghsa
Product: nette/applicationFixed in: 3.0.6
composerpatch availablevia ghsa
Product: nette/applicationFixed in: 2.0.19
composerpatch availablevia ghsa
Product: nette/applicationFixed in: 2.1.13

Vendor Advisories (1)

composerGHSA-8gv3-3j7f-wg94high

Potential Remote Code Execution vulnerability

Oct 2, 2020

References

github.com / nette/application/security/advisories/GHSA-8gv3-3j7f-wg94
Third Party Advisory
lists.debian.org / debian-lts-announce/2021/04/msg00003.html
Mailing ListThird Party Advisory
packagist.org / packages/nette/application
Third Party Advisory
packagist.org / packages/nette/nette
Third Party Advisory