Vulnerability-Lookup

CVE-2026-33013 (GCVE-0-2026-33013)

Vulnerability from cvelistv5 – Published: 2026-03-20 04:47 – Updated: 2026-03-25 14:23

Title

Micronaut vulnerable to DoS via crafted form-urlencoded body binding with descending array indices

Summary

Micronaut Framework is a JVM-based full stack Java framework designed for building modular, easily testable JVM applications. Versions prior to both 4.10.16 and 3.10.5 do not correctly handle descending array index order during form-urlencoded body binding in theJsonBeanPropertyBinder::expandArrayToThreshold, which allows remote attackers to cause a DoS (non-terminating loop, CPU exhaustion, and OutOfMemoryError) via crafted indexed form parameters (e.g., authors[1].name followed by authors[0].name). This issue has been fixed in versions 4.10.16 and 3.10.5.

Severity

8.2 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-25 14:22 UTC

CWE

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7634 records in the last 180 days details

References

5 references

URL	Tags
https://github.com/micronaut-projects/micronaut-c…	x_refsource_CONFIRM
https://github.com/micronaut-projects/micronaut-c…	x_refsource_MISC
https://github.com/micronaut-projects/micronaut-c…	x_refsource_MISC
https://github.com/micronaut-projects/micronaut-c…	x_refsource_MISC
https://github.com/micronaut-projects/micronaut-c…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
micronaut-projects	micronaut-core	Affected: >= 4.0.0-M1, < 4.10.16 Affected: < 3.10.5	guessed

Show details on NVD website

JSON

To clipboard

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}

CERTFR-2026-AVI-0467

Vulnerability from certfr_avis - Published: 2026-04-22 - Updated: 2026-04-22

De multiples vulnérabilités ont été découvertes dans Oracle Database Server. Certaines d'entre elles permettent à un attaquant de provoquer un déni de service à distance, une atteinte à la confidentialité des données et un contournement de la politique de sécurité.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

Vendor	Product	Description
Oracle	Database Server	Oracle Database Server (RDBMS) version 19.3 à 19.30
Oracle	Database Server	Oracle Database Server (Data Mining) version 23.4.0 à 23.26.1
Oracle	Database Server	Oracle Database Server (RDBMS) version 23.4.0 à 23.26.1
Oracle	Database Server	Oracle Database Server (XML Database) version 23.4.0 à 23.26.1
Oracle	Database Server	Oracle Database Server (Java VM) version 21.3 à 21.21
Oracle	Database Server	Oracle Database Server (Data Mining) version 19.3 à 19.30
Oracle	Database Server	Oracle Database Server (Java VM) version 19.3 à 19.30
Oracle	Database Server	Oracle Database Server (Data Mining) version 21.3 à 21.21
Oracle	Database Server	Oracle Database Server (RDBMS) version 21.3 à 21.21
Oracle	Database Server	Oracle Database Server (Clusterware) version 23.4.0 à 23.26.1
Oracle	Database Server	Oracle Database Server (Clusterware) version 19.3 à 19.30

References

Title

Publication Time

CLEANSTART-2026-KC30064 (CVE-2026-58062)

Vulnerability from cleanstart – Published: 2026-09-01 11:17 – Updated: 2026-09-18 11:59 – Source website

Withdrawn 2026-09-18

Summary

Security fixes in akhq 0.27.1-r5

Details

Package akhq version 0.27.1-r5 fixes 27 vulnerabilities: CVE-2026-58062, CVE-2026-59638, CVE-2026-59646, CVE-2026-12802, CVE-2026-59639...

References

URL

Type

https://akhq.io

WEB

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "CleanStart",
        "name": "akhq"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.27.1-r5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.27.1-r5"
      ]
    }
  ],
  "credits": [],
  "database_specific": {},
  "details": "Package akhq version 0.27.1-r5 fixes 27 vulnerabilities: CVE-2026-58062, CVE-2026-59638, CVE-2026-59646, CVE-2026-12802, CVE-2026-59639...",
  "id": "CLEANSTART-2026-KC30064",
  "modified": "2026-09-18T11:59:01.768079Z",
  "published": "2026-09-01T11:17:16Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://akhq.io"
    }
  ],
  "related": [],
  "schema_version": "1.7.3",
  "summary": "Security fixes in akhq 0.27.1-r5",
  "upstream": [
    "CVE-2026-58062",
    "CVE-2026-59638",
    "CVE-2026-59646",
    "CVE-2026-12802",
    "CVE-2026-59639",
    "CVE-2026-15055",
    "CVE-2026-59647",
    "CVE-2026-8763",
    "CVE-2026-13006",
    "CVE-2026-13505",
    "CVE-2026-13506",
    "CVE-2026-14682",
    "CVE-2026-33013",
    "CVE-2026-34479",
    "CVE-2026-35554",
    "CVE-2026-40983",
    "CVE-2026-40984",
    "CVE-2026-44241",
    "CVE-2026-58059",
    "CVE-2026-58061",
    "CVE-2026-59645",
    "CVE-2026-59949",
    "ghsa-r7wm-3cxj-wff9",
    "CVE-2025-8916",
    "CVE-2026-58063",
    "CVE-2026-8149",
    "CVE-2026-8798"
  ],
  "withdrawn": "2026-09-18T11:59:01.768079Z"
}

CLEANSTART-2026-OE40896 (CVE-2026-33013)

Vulnerability from cleanstart – Published: 2026-09-18 09:45 – Updated: 2026-10-09 04:14 – Source website

Summary

Security fix for CVE-2026-33013 applied in: akhq 0.27.1-r5

Details

Security vulnerability affects the akhq package. This issue is resolved in later releases. See references for vulnerability details.

Severity

7.5 (High)


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

8.2 (High)


                    
                      CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

References

URL

Type

	https://github.com/cleanstart-dev/cleanstart-secu…	ADVISORY
	https://osv.dev/vulnerability/CVE-2026-33013	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2026-33013	WEB

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "CleanStart",
        "name": "akhq",
        "purl": "pkg:apk/cleanstart/akhq?arch=noarch"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.27.1-r5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [],
  "database_specific": {},
  "details": "Security vulnerability affects the akhq package. This issue is resolved in later releases. See references for vulnerability details.",
  "id": "CLEANSTART-2026-OE40896",
  "modified": "2026-10-09T04:14:30Z",
  "published": "2026-09-18T09:45:14.603039Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-OE40896.json"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-33013"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33013"
    }
  ],
  "related": [],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Security fix for CVE-2026-33013 applied in: akhq 0.27.1-r5",
  "upstream": [
    "CVE-2026-33013"
  ]
}

FKIE_CVE-2026-33013

Vulnerability from fkie_nvd - Published: 2026-03-20 05:16 - Updated: 2026-06-17 10:36

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

URL	Tags
security-advisories@github.com	https://github.com/micronaut-projects/micronaut-core/commit/1afe509677c51b320041b7a2c177366d4a4deb55	Patch
security-advisories@github.com	https://github.com/micronaut-projects/micronaut-core/pull/12410	Issue Tracking
security-advisories@github.com	https://github.com/micronaut-projects/micronaut-core/releases/tag/v3.10.5	Release Notes
security-advisories@github.com	https://github.com/micronaut-projects/micronaut-core/releases/tag/v4.10.16	Release Notes
security-advisories@github.com	https://github.com/micronaut-projects/micronaut-core/security/advisories/GHSA-43w5-mmxv-cpvh	Exploit, Patch, Vendor Advisory

Impacted products

	Vendor	Product	Version
	objectcomputing	micronaut	*
	objectcomputing	micronaut	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "micronaut-core",
          "vendor": "micronaut-projects",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 4.0.0-M1, \u003c 4.10.16"
            },
            {
              "status": "affected",
              "version": "\u003c 3.10.5"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:objectcomputing:micronaut:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1EA64458-33DD-407D-8CFD-245365E789E2",
              "versionEndExcluding": "3.10.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:objectcomputing:micronaut:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "41907B31-CC76-4287-8A44-5A19AB54640D",
              "versionEndExcluding": "4.10.16",
              "versionStartIncluding": "4.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Micronaut Framework is a JVM-based full stack Java framework designed for building modular, easily testable JVM applications. Versions prior to both 4.10.16 and 3.10.5 do not correctly handle descending array index order during form-urlencoded body binding in theJsonBeanPropertyBinder::expandArrayToThreshold, which allows remote attackers to cause a DoS (non-terminating loop, CPU exhaustion, and OutOfMemoryError) via crafted indexed form parameters (e.g., authors[1].name followed by authors[0].name). This issue has been fixed in versions 4.10.16 and 3.10.5."
    },
    {
      "lang": "es",
      "value": "Micronaut Framework es un framework Java de pila completa basado en JVM dise\u00f1ado para construir aplicaciones JVM modulares y f\u00e1cilmente testeables. Las versiones anteriores a la 4.10.16 y a la 3.10.5 no manejan correctamente el orden descendente de los \u00edndices de array durante la vinculaci\u00f3n del cuerpo form-urlencoded en JsonBeanPropertyBinder::expandArrayToThreshold, lo que permite a atacantes remotos causar un DoS (bucle no terminante, agotamiento de CPU y OutOfMemoryError) a trav\u00e9s de par\u00e1metros de formulario indexados manipulados (p. ej., authors[1].name seguido de authors[0].name). Este problema ha sido solucionado en las versiones 4.10.16 y 3.10.5."
    }
  ],
  "id": "CVE-2026-33013",
  "lastModified": "2026-06-17T10:36:46.813",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.2,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-33013",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-03-25T14:22:10.515441Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-03-20T05:16:15.380",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/micronaut-projects/micronaut-core/commit/1afe509677c51b320041b7a2c177366d4a4deb55"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Issue Tracking"
      ],
      "url": "https://github.com/micronaut-projects/micronaut-core/pull/12410"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/micronaut-projects/micronaut-core/releases/tag/v3.10.5"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/micronaut-projects/micronaut-core/releases/tag/v4.10.16"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://github.com/micronaut-projects/micronaut-core/security/advisories/GHSA-43w5-mmxv-cpvh"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-835"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

GHSA-43W5-MMXV-CPVH

Vulnerability from github – Published: 2026-03-17 16:59 – Updated: 2026-03-31 18:45

Summary

Micronaut vulnerable to DoS via crafted form-urlencoded body binding with descending array indices

Details

In JsonBeanPropertyBinder::expandArrayToThreshold in io.micronaut:micronaut-json-core before Micronaut 4 4.10.16 and in Micronaut 3 before 3.10.5 does not correctly handle descending array index order during form-urlencoded body binding, which allows remote attackers to cause a denial of service (non-terminating loop, CPU exhaustion, and OutOfMemoryError) via crafted indexed form parameters (e.g., authors[1].name followed by authors[0].name).

Example

With such an application

package dosform;

import io.micronaut.http.HttpResponse;
import io.micronaut.http.MediaType;
import io.micronaut.http.annotation.Body;
import io.micronaut.http.annotation.Consumes;
import io.micronaut.http.annotation.Controller;
import io.micronaut.http.annotation.Get;
import io.micronaut.http.annotation.Post;
import io.micronaut.http.annotation.Produces;

import java.net.URI;

@Controller
class HomeController {

    @Produces(MediaType.TEXT_HTML)
    @Get
    String index() {
        return """
                <!DOCTYPE html>
                <html>
                <head>
                <title></title>
                </head>
                <body>
    <form action="/submit" method="post">
      <label for="firstAuthor">Fist Author</label>
      <input id="firstAuthor" name="authors[0].name" type="text"/>

      <label for="secondAuthor">Second Author</label>
      <input id="secondAuthor" name="authors[1].name" type="text"/>

      <label for="thirdAuthor">Third Author</label>
      <input id="thirdAuthor" name="authors[2].name" type="text"/>

      <button type="submit">Submit</button>
    </form>

                </body>
                </html>
                """;
    }

    @Consumes(MediaType.APPLICATION_FORM_URLENCODED)
    @Post("/submit")
    HttpResponse<?> submit(@Body Book book) {
        return HttpResponse.seeOther(URI.create("/"));
    }
}
package dosform;

import io.micronaut.core.annotation.Introspected;

import java.util.Objects;

@Introspected
public class Author {
    private String name;
    public String getName() { return name; }
    public void setName(String name) { this.name = name; }

    @Override
    public final boolean equals(Object o) {
        if (!(o instanceof Author)) return false;

        Author author = (Author) o;
        return Objects.equals(name, author.name);
    }

    @Override
    public int hashCode() {
        return Objects.hashCode(name);
    }

    @Override
    public String toString() {
        return "Author{" +
                "name='" + name + '\'' +
                '}';
    }
}
package dosform;

import io.micronaut.core.annotation.Introspected;

import java.util.List;
import java.util.Objects;

@Introspected
public class Book {
    private List<Author> authors;
    public List<Author> getAuthors() { return authors; }
    public void setAuthors(List<Author> authors) { this.authors = authors; }

    @Override
    public final boolean equals(Object o) {
        if (!(o instanceof Book)) return false;

        Book book = (Book) o;
        return Objects.equals(authors, book.authors);
    }

    @Override
    public int hashCode() {
        return Objects.hashCode(authors);
    }

    @Override
    public String toString() {
        return "Book{" +
                "authors=" + authors +
                '}';
    }
}

Sending curl -v -X POST 'http://127.0.0.1:8080/submit' -H 'Content-Type: application/x-www-form-urlencoded' --data-urlencode 'authors[1].name=RobertGalbraith' --data-urlencode 'authors[0].name=JKRowling' causes sustained CPU usage and unbounded memory growth (eventually OutOfMemoryError).

Patches

For Micronaut 4, the problem has been patched in micronaut-core, dependencies with group id io.micronaut, since 4.10.16.

For Micronaut 3, the problem has been patched since 3.10.5

Users upgrade to the latest version of the framework.

Workarounds

There is no way for users to fix or remediate the vulnerability without upgrading.

References

PR Fix: https://github.com/micronaut-projects/micronaut-core/pull/12410

Severity

8.2 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "io.micronaut:micronaut-json-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.0.0-M1"
            },
            {
              "fixed": "4.10.16"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "io.micronaut:micronaut-json-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.9.0"
            },
            {
              "fixed": "3.10.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "io.micronaut:micronaut-json-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.8.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-33013"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-835"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-17T16:59:59Z",
    "nvd_published_at": "2026-03-20T05:16:15Z",
    "severity": "HIGH"
  },
  "details": "In `JsonBeanPropertyBinder::expandArrayToThreshold` in `io.micronaut:micronaut-json-core` before Micronaut 4 4.10.16 and in Micronaut 3 before 3.10.5 does not correctly handle descending array index order during form-urlencoded body binding, which allows remote attackers to cause a denial of service (non-terminating loop, CPU exhaustion, and OutOfMemoryError) via crafted indexed form parameters (e.g., `authors[1].name` followed by `authors[0].name`).\n\n### Example\n\nWith such an application\n\n```java\npackage dosform;\n\nimport io.micronaut.http.HttpResponse;\nimport io.micronaut.http.MediaType;\nimport io.micronaut.http.annotation.Body;\nimport io.micronaut.http.annotation.Consumes;\nimport io.micronaut.http.annotation.Controller;\nimport io.micronaut.http.annotation.Get;\nimport io.micronaut.http.annotation.Post;\nimport io.micronaut.http.annotation.Produces;\n\nimport java.net.URI;\n\n@Controller\nclass HomeController {\n\n    @Produces(MediaType.TEXT_HTML)\n    @Get\n    String index() {\n        return \"\"\"\n                \u003c!DOCTYPE html\u003e\n                \u003chtml\u003e\n                \u003chead\u003e\n                \u003ctitle\u003e\u003c/title\u003e\n                \u003c/head\u003e\n                \u003cbody\u003e\n    \u003cform action=\"/submit\" method=\"post\"\u003e\n      \u003clabel for=\"firstAuthor\"\u003eFist Author\u003c/label\u003e\n      \u003cinput id=\"firstAuthor\" name=\"authors[0].name\" type=\"text\"/\u003e\n\n      \u003clabel for=\"secondAuthor\"\u003eSecond Author\u003c/label\u003e\n      \u003cinput id=\"secondAuthor\" name=\"authors[1].name\" type=\"text\"/\u003e\n      \n      \u003clabel for=\"thirdAuthor\"\u003eThird Author\u003c/label\u003e\n      \u003cinput id=\"thirdAuthor\" name=\"authors[2].name\" type=\"text\"/\u003e\n\n      \u003cbutton type=\"submit\"\u003eSubmit\u003c/button\u003e\n    \u003c/form\u003e\n               \n                \u003c/body\u003e\n                \u003c/html\u003e\n                \"\"\";\n    }\n\n    @Consumes(MediaType.APPLICATION_FORM_URLENCODED)\n    @Post(\"/submit\")\n    HttpResponse\u003c?\u003e submit(@Body Book book) {\n        return HttpResponse.seeOther(URI.create(\"/\"));\n    }\n}\npackage dosform;\n\nimport io.micronaut.core.annotation.Introspected;\n\nimport java.util.Objects;\n\n@Introspected\npublic class Author {\n    private String name;\n    public String getName() { return name; }\n    public void setName(String name) { this.name = name; }\n\n    @Override\n    public final boolean equals(Object o) {\n        if (!(o instanceof Author)) return false;\n\n        Author author = (Author) o;\n        return Objects.equals(name, author.name);\n    }\n\n    @Override\n    public int hashCode() {\n        return Objects.hashCode(name);\n    }\n\n    @Override\n    public String toString() {\n        return \"Author{\" +\n                \"name=\u0027\" + name + \u0027\\\u0027\u0027 +\n                \u0027}\u0027;\n    }\n}\npackage dosform;\n\nimport io.micronaut.core.annotation.Introspected;\n\nimport java.util.List;\nimport java.util.Objects;\n\n@Introspected\npublic class Book {\n    private List\u003cAuthor\u003e authors;\n    public List\u003cAuthor\u003e getAuthors() { return authors; }\n    public void setAuthors(List\u003cAuthor\u003e authors) { this.authors = authors; }\n\n    @Override\n    public final boolean equals(Object o) {\n        if (!(o instanceof Book)) return false;\n\n        Book book = (Book) o;\n        return Objects.equals(authors, book.authors);\n    }\n\n    @Override\n    public int hashCode() {\n        return Objects.hashCode(authors);\n    }\n\n    @Override\n    public String toString() {\n        return \"Book{\" +\n                \"authors=\" + authors +\n                \u0027}\u0027;\n    }\n}\n```\n\nSending `curl -v -X POST \u0027http://127.0.0.1:8080/submit\u0027 -H \u0027Content-Type: application/x-www-form-urlencoded\u0027 --data-urlencode \u0027authors[1].name=RobertGalbraith\u0027 --data-urlencode \u0027authors[0].name=JKRowling\u0027` causes sustained CPU usage and unbounded memory growth (eventually `OutOfMemoryError`). \n\n### Patches\nFor Micronaut 4, the problem has been patched in `micronaut-core`, dependencies with group id `io.micronaut`, since [4.10.16](https://github.com/micronaut-projects/micronaut-core/releases/tag/v4.10.16).\n\nFor Micronaut 3, the problem has been patched since [3.10.5](https://github.com/micronaut-projects/micronaut-core/releases/tag/v3.10.5)\n\nUsers upgrade to the latest version of the framework. \n\n### Workarounds\nThere is no way for users to fix or remediate the vulnerability without upgrading.\n\n### References\nPR Fix: https://github.com/micronaut-projects/micronaut-core/pull/12410",
  "id": "GHSA-43w5-mmxv-cpvh",
  "modified": "2026-03-31T18:45:02Z",
  "published": "2026-03-17T16:59:59Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/micronaut-projects/micronaut-core/security/advisories/GHSA-43w5-mmxv-cpvh"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33013"
    },
    {
      "type": "WEB",
      "url": "https://github.com/micronaut-projects/micronaut-core/pull/12410"
    },
    {
      "type": "WEB",
      "url": "https://github.com/micronaut-projects/micronaut-core/commit/1afe509677c51b320041b7a2c177366d4a4deb55"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/micronaut-projects/micronaut-core"
    },
    {
      "type": "WEB",
      "url": "https://github.com/micronaut-projects/micronaut-core/releases/tag/v3.10.5"
    },
    {
      "type": "WEB",
      "url": "https://github.com/micronaut-projects/micronaut-core/releases/tag/v4.10.16"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Micronaut vulnerable to DoS via crafted form-urlencoded body binding with descending array indices"
}

Sightings

Author	Source	Type	Date	Other

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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.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-33013 (GCVE-0-2026-33013)

CERTFR-2026-AVI-0467

Solutions

CLEANSTART-2026-KC30064 (CVE-2026-58062)

CLEANSTART-2026-OE40896 (CVE-2026-33013)

FKIE_CVE-2026-33013

GHSA-43W5-MMXV-CPVH

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