Vulnerability-Lookup

CVE-2026-103885 (GCVE-0-2026-103885)

Vulnerability from cvelistv5 – Published: 2026-10-02 10:09 – Updated: 2026-10-08 13:06

Title

Apache Directory LDAP API: Denial of service via crafted telephone number values

Summary

Asymmetric Resource Consumption vulnerability in Apache Directory LDAP API. A LDAP server using the LDAP API (like Apache DS) may consume 100% of a CPU core indefinitely when processing some badly crafted Telephone Numbers. This issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9. Users are recommended to upgrade to version 2.1.9, which fixes the issue.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-07 20:54 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

apache mitre root Scorecard

References

2 references

URL	Tags
https://lists.apache.org/thread.html/wjt9p1l123v6…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/10/02/8

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache Directory LDAP API	Affected: 2.1.0 , < 2.1.9 (semver)

Credits

Claude Security The Apache Software Foundation

Show details on NVD website

JSON

To clipboard

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EUVD-2026-382212

European Vulnerability Database identifier assigned by ENISA

Reserved

2026-10-02 10:42

Assigner

ENISA

Alias of

a CVE record, shown under related vulnerabilities. This identifier carries no description, severity or references of its own: they belong to that CVE.

JSON

To clipboard

{
  "assigner": "ENISA",
  "date_reserved": "2026-10-02T10:42:17.138309+00:00",
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}

FKIE_CVE-2026-103885

Vulnerability from fkie_nvd - Published: 2026-10-02 10:17 - Updated: 2026-10-08 13:17

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@apache.org	https://lists.apache.org/thread.html/wjt9p1l123v6b3zd5dg41f8lfrgy5vg9
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/10/02/8

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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GHSA-C2CQ-MMH3-7WXH

Vulnerability from github – Published: 2026-10-02 12:31 – Updated: 2026-10-08 15:32

Details

Asymmetric Resource Consumption vulnerability in Apache Directory LDAP API.

A LDAP server using the LDAP API (like Apache DS) may consume 100% of a CPU core indefinitely when processing some badly crafted Telephone Numbers.

This issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9.

Users are recommended to upgrade to version 2.1.9, which fixes the issue.

Severity

7.5 (High)


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

Show details on source website

JSON

To clipboard

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  },
  "details": "Asymmetric Resource Consumption\u00a0vulnerability in Apache Directory LDAP API.\n\n\n\nA LDAP server using the LDAP API (like Apache DS)\u00a0may consume 100% of a CPU core indefinitely\u00a0when processing some badly crafted Telephone Numbers.\n\n\n\nThis issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9.\n\n\n\nUsers are recommended to upgrade to version 2.1.9, which fixes the issue.",
  "id": "GHSA-c2cq-mmh3-7wxh",
  "modified": "2026-10-08T15:32:46Z",
  "published": "2026-10-02T12:31:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-103885"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/wjt9p1l123v6b3zd5dg41f8lfrgy5vg9"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/10/02/8"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

UBUNTU-CVE-2026-103885 (CVE-2026-103885)

Vulnerability from osv_ubuntu – Published: 2026-10-02 10:17 – Updated: 2026-10-08 17:13 – Source website

Details

Severity

7.5 (High)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-103885	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-103885	REPORT
	https://www.openwall.com/lists/oss-security/2026/…	REPORT
	https://lists.apache.org/thread.html/wjt9p1l123v6…	REPORT
	http://www.openwall.com/lists/oss-security/2026/10/02/8	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libapache-directory-api-java",
            "binary_version": "1.0.0~M20-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "apache-directory-api",
        "purl": "pkg:deb/ubuntu/apache-directory-api@1.0.0~M20-3?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.0~M20-3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libapache-directory-api-java",
            "binary_version": "1.0.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "apache-directory-api",
        "purl": "pkg:deb/ubuntu/apache-directory-api@1.0.0-1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.0~M20-5",
        "1.0.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libapache-directory-api-java",
            "binary_version": "1.0.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "apache-directory-api",
        "purl": "pkg:deb/ubuntu/apache-directory-api@1.0.0-1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libapache-directory-api-java",
            "binary_version": "1.0.0-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "apache-directory-api",
        "purl": "pkg:deb/ubuntu/apache-directory-api@1.0.0-2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.0-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libapache-directory-api-java",
            "binary_version": "2.1.2-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "apache-directory-api",
        "purl": "pkg:deb/ubuntu/apache-directory-api@2.1.2-1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.1.2-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libapache-directory-api-java",
            "binary_version": "2.1.2-2build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "apache-directory-api",
        "purl": "pkg:deb/ubuntu/apache-directory-api@2.1.2-2build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.1.2-2",
        "2.1.2-2build1"
      ]
    }
  ],
  "aliases": [],
  "details": "Asymmetric Resource Consumption\u00a0vulnerability in Apache Directory LDAP API. A LDAP server using the LDAP API (like Apache DS)\u00a0may consume 100% of a CPU core indefinitely\u00a0when processing some badly crafted Telephone Numbers. This issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9. Users are recommended to upgrade to version 2.1.9, which fixes the issue.",
  "id": "UBUNTU-CVE-2026-103885",
  "modified": "2026-10-08T17:13:43Z",
  "published": "2026-10-02T10:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-103885"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-103885"
    },
    {
      "type": "REPORT",
      "url": "https://www.openwall.com/lists/oss-security/2026/10/02/8"
    },
    {
      "type": "REPORT",
      "url": "https://lists.apache.org/thread.html/wjt9p1l123v6b3zd5dg41f8lfrgy5vg9"
    },
    {
      "type": "REPORT",
      "url": "http://www.openwall.com/lists/oss-security/2026/10/02/8"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "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": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-103885"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.

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-2026-103885 (GCVE-0-2026-103885)

EUVD-2026-382212

FKIE_CVE-2026-103885

GHSA-C2CQ-MMH3-7WXH

UBUNTU-CVE-2026-103885 (CVE-2026-103885)

Tags

Sightings

Nomenclature

Related by attack behaviour