Vulnerability-Lookup

CVE-2026-44235 (GCVE-0-2026-44235)

Vulnerability from cvelistv5 – Published: 2026-09-17 17:09 – Updated: 2026-09-17 17:43

Title

rabbitmq-c: size_t underflow in AMQP frame length computation leads to out-of-bounds read

Summary

rabbitmq-c is a C-language AMQP client library for RabbitMQ. Prior to 0.16.0, a malicious AMQP server can send an undersized HEADER or METHOD frame during client login and cause unsigned size_t underflow in amqp_handle_input() in librabbitmq/amqp_connection.c. The parser subtracts HEADER_SIZE, fixed per-frame fields, and FOOTER_SIZE from state->target_size without first checking the minimum frame length. The wrapped encoded.len value is passed through amqp_decode_properties() to amqp_decode_table_internal(), where it defeats bounds checks and causes an out-of-bounds read and process crash. An on-path attacker can also trigger the issue when AMQP traffic is not protected by TLS with certificate validation. The demonstrated impact is denial of service, with no reliable memory disclosure or code execution shown. This issue is fixed in version 0.16.0.

Severity

6.5 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-17 17:43 UTC

CWE

CWE-125 - Out-of-bounds Read
CWE-191 - Integer Underflow (Wrap or Wraparound)

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/alanxz/rabbitmq-c/security/adv…	x_refsource_CONFIRM
https://github.com/alanxz/rabbitmq-c/pull/878	x_refsource_MISC
https://github.com/alanxz/rabbitmq-c/commit/1d3af…	x_refsource_MISC
https://github.com/alanxz/rabbitmq-c/releases/tag…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
alanxz	rabbitmq-c	Affected: < 0.16.0	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-44235

Vulnerability from fkie_nvd - Published: 2026-09-17 18:16 - Updated: 2026-09-17 18:16

Severity

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/alanxz/rabbitmq-c/commit/1d3afbb056fee5cc9ea05680bf32288715d0d802
	security-advisories@github.com	https://github.com/alanxz/rabbitmq-c/pull/878
	security-advisories@github.com	https://github.com/alanxz/rabbitmq-c/releases/tag/v0.16.0
	security-advisories@github.com	https://github.com/alanxz/rabbitmq-c/security/advisories/GHSA-9mmv-r8g3-qp46
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/alanxz/rabbitmq-c/security/advisories/GHSA-9mmv-r8g3-qp46

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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          "vendor": "alanxz",
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OESA-2026-2713 (CVE-2026-44235)

Vulnerability from osv_openeuler – Published: 2026-06-24 11:11 – Updated: 2026-08-06 11:11 – Source website

Summary

librabbitmq security update

Details

This is a C-language AMQP client library for use with AMQP servers speaking protocol versions 0-9-1.

Security Fix(es):

(CVE-2026-44235)

(CVE-2026-44236)

Severity

7.1 (High)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-44235	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-44236	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "librabbitmq-0.9.0-8.oe2003sp4.aarch64.rpm",
          "librabbitmq-debuginfo-0.9.0-8.oe2003sp4.aarch64.rpm",
          "librabbitmq-debugsource-0.9.0-8.oe2003sp4.aarch64.rpm",
          "librabbitmq-devel-0.9.0-8.oe2003sp4.aarch64.rpm",
          "librabbitmq-help-0.9.0-8.oe2003sp4.aarch64.rpm"
        ],
        "src": [
          "librabbitmq-0.9.0-8.oe2003sp4.src.rpm"
        ],
        "x86_64": [
          "librabbitmq-0.9.0-8.oe2003sp4.x86_64.rpm",
          "librabbitmq-debuginfo-0.9.0-8.oe2003sp4.x86_64.rpm",
          "librabbitmq-debugsource-0.9.0-8.oe2003sp4.x86_64.rpm",
          "librabbitmq-devel-0.9.0-8.oe2003sp4.x86_64.rpm",
          "librabbitmq-help-0.9.0-8.oe2003sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP4",
        "name": "librabbitmq",
        "purl": "pkg:rpm/openEuler/librabbitmq\u0026distro=openEuler-20.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.9.0-8.oe2003sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "librabbitmq-0.9.0-10.oe2203sp4.aarch64.rpm",
          "librabbitmq-debuginfo-0.9.0-10.oe2203sp4.aarch64.rpm",
          "librabbitmq-debugsource-0.9.0-10.oe2203sp4.aarch64.rpm",
          "librabbitmq-devel-0.9.0-10.oe2203sp4.aarch64.rpm",
          "librabbitmq-help-0.9.0-10.oe2203sp4.aarch64.rpm"
        ],
        "src": [
          "librabbitmq-0.9.0-10.oe2203sp4.src.rpm"
        ],
        "x86_64": [
          "librabbitmq-0.9.0-10.oe2203sp4.x86_64.rpm",
          "librabbitmq-debuginfo-0.9.0-10.oe2203sp4.x86_64.rpm",
          "librabbitmq-debugsource-0.9.0-10.oe2203sp4.x86_64.rpm",
          "librabbitmq-devel-0.9.0-10.oe2203sp4.x86_64.rpm",
          "librabbitmq-help-0.9.0-10.oe2203sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "librabbitmq",
        "purl": "pkg:rpm/openEuler/librabbitmq\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.9.0-10.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "librabbitmq-0.13.0-3.oe2403sp1.aarch64.rpm",
          "librabbitmq-debuginfo-0.13.0-3.oe2403sp1.aarch64.rpm",
          "librabbitmq-debugsource-0.13.0-3.oe2403sp1.aarch64.rpm",
          "librabbitmq-devel-0.13.0-3.oe2403sp1.aarch64.rpm"
        ],
        "noarch": [
          "librabbitmq-help-0.13.0-3.oe2403sp1.noarch.rpm"
        ],
        "src": [
          "librabbitmq-0.13.0-3.oe2403sp1.src.rpm"
        ],
        "x86_64": [
          "librabbitmq-0.13.0-3.oe2403sp1.x86_64.rpm",
          "librabbitmq-debuginfo-0.13.0-3.oe2403sp1.x86_64.rpm",
          "librabbitmq-debugsource-0.13.0-3.oe2403sp1.x86_64.rpm",
          "librabbitmq-devel-0.13.0-3.oe2403sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP1",
        "name": "librabbitmq",
        "purl": "pkg:rpm/openEuler/librabbitmq\u0026distro=openEuler-24.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.13.0-3.oe2403sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "librabbitmq-0.13.0-3.oe2403sp3.aarch64.rpm",
          "librabbitmq-debuginfo-0.13.0-3.oe2403sp3.aarch64.rpm",
          "librabbitmq-debugsource-0.13.0-3.oe2403sp3.aarch64.rpm",
          "librabbitmq-devel-0.13.0-3.oe2403sp3.aarch64.rpm"
        ],
        "noarch": [
          "librabbitmq-help-0.13.0-3.oe2403sp3.noarch.rpm"
        ],
        "src": [
          "librabbitmq-0.13.0-3.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "librabbitmq-0.13.0-3.oe2403sp3.x86_64.rpm",
          "librabbitmq-debuginfo-0.13.0-3.oe2403sp3.x86_64.rpm",
          "librabbitmq-debugsource-0.13.0-3.oe2403sp3.x86_64.rpm",
          "librabbitmq-devel-0.13.0-3.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "librabbitmq",
        "purl": "pkg:rpm/openEuler/librabbitmq\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.13.0-3.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "This is a C-language AMQP client library for use with AMQP servers speaking protocol versions 0-9-1.\r\n\r\nSecurity Fix(es):\n\n(CVE-2026-44235)\n\n(CVE-2026-44236)",
  "id": "OESA-2026-2713",
  "modified": "2026-08-06T11:11:38Z",
  "published": "2026-06-24T11:11:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2713"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44235"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44236"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "librabbitmq security update",
  "upstream": [
    "CVE-2026-44235",
    "CVE-2026-44236"
  ]
}

UBUNTU-CVE-2026-44235 (CVE-2026-44235)

Vulnerability from osv_ubuntu – Published: 2026-06-11 00:00 – Updated: 2026-09-03 19:31 – Source website

Details

size_t underflow in AMQP frame length computation leads to out-of-bounds read in rabbitmq-c

Severity

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-44235	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-44235	REPORT
	https://github.com/alanxz/rabbitmq-c/security/adv…	REPORT
	https://ubuntu.com/security/notices/USN-8437-1	ADVISORY
	https://ubuntu.com/security/notices/USN-8724-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "amqp-tools",
            "binary_version": "0.4.1-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "librabbitmq1",
            "binary_version": "0.4.1-1ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "librabbitmq",
        "purl": "pkg:deb/ubuntu/librabbitmq@0.4.1-1ubuntu0.1~esm2?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.4.1-1ubuntu0.1~esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.3.0-1",
        "0.4.1-1",
        "0.4.1-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "amqp-tools",
            "binary_version": "0.7.1-1ubuntu0.2+esm1"
          },
          {
            "binary_name": "librabbitmq4",
            "binary_version": "0.7.1-1ubuntu0.2+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "librabbitmq",
        "purl": "pkg:deb/ubuntu/librabbitmq@0.7.1-1ubuntu0.2+esm1?arch=source\u0026distro=esm-apps-legacy/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.7.1-1ubuntu0.2+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.5.2-2",
        "0.7.1-1",
        "0.7.1-1ubuntu0.1",
        "0.7.1-1ubuntu0.2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "amqp-tools",
            "binary_version": "0.8.0-1ubuntu0.18.04.2+esm1"
          },
          {
            "binary_name": "librabbitmq4",
            "binary_version": "0.8.0-1ubuntu0.18.04.2+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "librabbitmq",
        "purl": "pkg:deb/ubuntu/librabbitmq@0.8.0-1ubuntu0.18.04.2+esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.8.0-1ubuntu0.18.04.2+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.8.0-1",
        "0.8.0-1build1",
        "0.8.0-1ubuntu0.18.04.1",
        "0.8.0-1ubuntu0.18.04.2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "amqp-tools",
            "binary_version": "0.10.0-1ubuntu0.20.04.1~esm1"
          },
          {
            "binary_name": "librabbitmq4",
            "binary_version": "0.10.0-1ubuntu0.20.04.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "librabbitmq",
        "purl": "pkg:deb/ubuntu/librabbitmq@0.10.0-1ubuntu0.20.04.1~esm1?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.10.0-1ubuntu0.20.04.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.9.0-0.2",
        "0.9.0-0.2ubuntu1",
        "0.10.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "amqp-tools",
            "binary_version": "0.10.0-1ubuntu2.1"
          },
          {
            "binary_name": "librabbitmq4",
            "binary_version": "0.10.0-1ubuntu2.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "librabbitmq",
        "purl": "pkg:deb/ubuntu/librabbitmq@0.10.0-1ubuntu2.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.10.0-1ubuntu2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.10.0-1",
        "0.10.0-1build1",
        "0.10.0-1ubuntu1",
        "0.10.0-1ubuntu2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "amqp-tools",
            "binary_version": "0.11.0-1ubuntu0.1"
          },
          {
            "binary_name": "librabbitmq4",
            "binary_version": "0.11.0-1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "librabbitmq",
        "purl": "pkg:deb/ubuntu/librabbitmq@0.11.0-1ubuntu0.1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.11.0-1ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.11.0-1",
        "0.11.0-1build1",
        "0.11.0-1build2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "amqp-tools",
            "binary_version": "0.15.0-1ubuntu0.25.10.1"
          },
          {
            "binary_name": "librabbitmq4",
            "binary_version": "0.15.0-1ubuntu0.25.10.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "librabbitmq",
        "purl": "pkg:deb/ubuntu/librabbitmq@0.15.0-1ubuntu0.25.10.1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.15.0-1ubuntu0.25.10.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.15.0-1",
        "0.15.0-1build1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "amqp-tools",
            "binary_version": "0.15.0-1ubuntu0.26.04.1"
          },
          {
            "binary_name": "librabbitmq4",
            "binary_version": "0.15.0-1ubuntu0.26.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "librabbitmq",
        "purl": "pkg:deb/ubuntu/librabbitmq@0.15.0-1ubuntu0.26.04.1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.15.0-1ubuntu0.26.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.15.0-1build1",
        "0.15.0-1build2"
      ]
    }
  ],
  "aliases": [],
  "details": "size_t underflow in AMQP frame length computation leads to out-of-bounds read in rabbitmq-c",
  "id": "UBUNTU-CVE-2026-44235",
  "modified": "2026-09-03T19:31:22Z",
  "published": "2026-06-11T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-44235"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-44235"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/alanxz/rabbitmq-c/security/advisories/GHSA-9mmv-r8g3-qp46"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8437-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8724-1"
    }
  ],
  "related": [
    "USN-8437-1",
    "USN-8724-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-44235"
  ]
}

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.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

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-2026-44235 (GCVE-0-2026-44235)

FKIE_CVE-2026-44235

OESA-2026-2713 (CVE-2026-44235)

UBUNTU-CVE-2026-44235 (CVE-2026-44235)

Tags

Sightings

Nomenclature

Related by attack behaviour