CVE-2020-15227 (GCVE-0-2020-15227)

Vulnerability from cvelistv5 – Published: 2020-10-01 19:00 – Updated: 2024-08-04 13:08
VLAI Shadowserver KEVIntel
Title
Remote Code Execution vulnerability
Summary
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.
Severity
8.7 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
CWE
  • CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Assigner
References
Impacted products
Vendor Product Version
nette application Affected: >= 2.0.0, < 2.0.19
Affected: >= 2.1.0, < 2.1.13
Affected: >= 2.2.0, < 2.2.10
Affected: >= 2.3.0, < 2.3.14
Affected: >= 2.4.0, < 2.4.16
Affected: >= 3.0.0, < 3.0.6
Create a notification for this product.
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: a8987204-17d4-4edb-bf74-d28321b8e3cf

Vulnerability ID: CVE-2020-15227

Status: Confirmed

Status Updated: 2023-10-14 15:50 UTC

Exploited: Yes

Characteristics
Severity: 98.0
Timestamps
First Seen: 2023-10-14
Asserted: 2023-10-14
Last Seen: 2023-10-14
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: Nette / Nette | Class: web-app-framework | Severity: Critical (CVSS 9.8) | IoT: no | In CISA KEV: no | Honeypot connections on 2023-03-15: 3
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 2
Iot no
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class web-app-framework
7D Avg 0
Vendor Nette
30D Avg 0
90D Avg 1
Product Nette
Cisa Kev no
Connections 3
Observation Date 2023-03-15
Vulnerability Class CVSS
Vulnerability Score 9.8
Vulnerability Severity Critical
References
Created: 2026-06-30 09:42 UTC | Updated: 2026-06-30 15:34 UTC
KEVIntel
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: ec098222-9984-43f8-8cea-c0618ec2aab3

Vulnerability ID: CVE-2020-15227

Status: Confirmed

Status Updated: 2025-07-11 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2025-07-11
Asserted: 2025-07-11
Scope
Notes: KEVIntel entry: Remote Code Execution vulnerability | Affected: nette / application | CVSS: 8.7 (HIGH) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title Remote Code Execution vulnerability
Vendor nette
Product application
Added Date 2025-07-11T00:00:00.000Z
Cvss Score 8.7
Epss Score None
Cvss Severity HIGH
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-06-23 14:03 UTC | Updated: 2026-07-10 06:14 UTC
Show details on NVD website
To clipboard 

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PHP/Composer\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N\",\"baseScore\":8.7,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.2,\"impactScore\":5.8},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:P/A:P\",\"baseScore\":7.5,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":10.0,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-74\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-94\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nette:application:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.0.0\",\"versionEndExcluding\":\"2.0.19\",\"matchCriteriaId\":\"D5C5A1EE-ACB5-4AB4-A759-0EC50554976C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nette:application:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.1.0\",\"versionEndExcluding\":\"2.1.13\",\"matchCriteriaId\":\"66EF54A6-0FBA-4254-A596-0AC4CB70D77B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nette:application:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.2.0\",\"versionEndExcluding\":\"2.2.10\",\"matchCriteriaId\":\"6DD54B19-FE78-4D7D-9B01-E8653195239F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nette:application:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.3.0\",\"versionEndExcluding\":\"2.3.14\",\"matchCriteriaId\":\"13DB4052-E17F-496F-8661-83CFF275890E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nette:application:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.4.0\",\"versionEndExcluding\":\"2.4.16\",\"matchCriteriaId\":\"AAA09B8B-7053-47C1-BCEB-7AC725BA6366\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:nette:application:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.0.0\",\"versionEndExcluding\":\"3.0.6\",\"matchCriteriaId\":\"FEEF9DBE-8B5D-4B03-A7B9-3E5BE9C67080\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DEECE5FC-CACF-4496-A3E7-164736409252\"}]}]}],\"references\":[{\"url\":\"https://github.com/nette/application/security/advisories/GHSA-8gv3-3j7f-wg94\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2021/04/msg00003.html\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://packagist.org/packages/nette/application\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://packagist.org/packages/nette/nette\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/nette/application/security/advisories/GHSA-8gv3-3j7f-wg94\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2021/04/msg00003.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://packagist.org/packages/nette/application\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://packagist.org/packages/nette/nette\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "current_release_date": "2025-11-21T15:42:17+00:00",
      "cve": "CVE-2020-15227",
      "id": "CVE-2020-15227",
      "initial_release_date": "2020-10-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "php-nette: Code injection attack by passing specially formed parameters to URL",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-15227.json",
      "version": "3"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.