CVE-2026-103552 (GCVE-0-2026-103552)

Vulnerability from cvelistv5 – Published: 2026-10-02 09:48 – Updated: 2026-10-02 09:48
VLAI
Title
Apache Directory LDAP API: A unbound client can send a deeply nested search filter that overflows the stack in the server's decoder
Summary
Stack Overflow vulnerability in Apache Directory LDAP API. Before binding, a client can send a deeply nested search filter that overflows the stack in the server's decoder. This issue affects Apache Directory LDAP API: from 1.2.0 before 1.2.9. Users are recommended to upgrade to version 1.2.9, which fixes the issue.
Severity
No CVSS data available.
CWE
  • CWE-121 - Stack-based buffer overflow
Assigner
References
Impacted products
Vendor Product Version CPE status
Apache Software Foundation Apache Directory LDAP API Affected: 1.2.0 , < 1.2.9 (semver)
guessed Create a notification for this product.
Credits
Claude Security The Apache Software Foundation
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected",
          "packageName": "org.apache.directory.api:api-ldap-codec-core",
          "packageURL": "pkg:maven/org.apache.directory.api/api-ldap-codec-core",
          "product": "Apache Directory LDAP API",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThan": "1.2.9",
              "status": "affected",
              "version": "1.2.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "tool",
          "value": "Claude Security"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "The Apache Software Foundation"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eStack Overflow vulnerability in Apache Directory LDAP API.\u003c/p\u003e\u003cp\u003e\u003cspan\u003eBefore binding, a client can send a deeply nested search filter \u003c/span\u003e\u003cspan\u003ethat overflows the stack in the server\u0027s decoder.\u003c/span\u003e\u003c/p\u003e\u003cp\u003eThis issue affects Apache Directory LDAP API: from 1.2.0 before 1.2.9.\u003c/p\u003e\u003cp\u003eUsers are recommended to upgrade to version 1.2.9, which fixes the issue.\u003c/p\u003e"
            }
          ],
          "value": "Stack Overflow vulnerability in Apache Directory LDAP API.\n\n\n\nBefore binding, a client can send a deeply nested search filter that overflows the stack in the server\u0027s decoder.\n\n\n\nThis issue affects Apache Directory LDAP API: from 1.2.0 before 1.2.9.\n\n\n\nUsers are recommended to upgrade to version 1.2.9, which fixes the issue."
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "text": "critical"
            },
            "type": "Textual description of severity"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-121",
              "description": "CWE-121 Stack-based buffer overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-02T09:48:05.132Z",
        "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "shortName": "apache"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.apache.org/thread.html/fn3bwknn57266hx66w9vv6b4k8rfwcx7"
        }
      ],
      "source": {
        "discovery": "INTERNAL"
      },
      "title": "Apache Directory LDAP API: A unbound client can send a deeply nested search filter that overflows the stack in the server\u0027s decoder",
      "x_generator": {
        "engine": "Vulnogram 1.0.3"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
    "assignerShortName": "apache",
    "cveId": "CVE-2026-103552",
    "datePublished": "2026-10-02T09:48:05.132Z",
    "dateReserved": "2026-09-30T20:36:55.045Z",
    "dateUpdated": "2026-10-02T09:48:05.132Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-103552",
      "date": "2026-10-02",
      "epss": "0.00181",
      "percentile": "0.0696"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "collectionURL": "https://repo.maven.apache.org/maven2",
                "defaultStatus": "unaffected",
                "packageName": "org.apache.directory.api:api-ldap-codec-core",
                "packageURL": "pkg:maven/org.apache.directory.api/api-ldap-codec-core",
                "product": "Apache Directory LDAP API",
                "vendor": "Apache Software Foundation",
                "versions": [
                  {
                    "lessThan": "1.2.9",
                    "status": "affected",
                    "version": "1.2.0",
                    "versionType": "semver"
                  }
                ]
              }
            ],
            "source": "security@apache.org"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Stack Overflow vulnerability in Apache Directory LDAP API.\n\n\n\nBefore binding, a client can send a deeply nested search filter that overflows the stack in the server\u0027s decoder.\n\n\n\nThis issue affects Apache Directory LDAP API: from 1.2.0 before 1.2.9.\n\n\n\nUsers are recommended to upgrade to version 1.2.9, which fixes the issue."
          }
        ],
        "id": "CVE-2026-103552",
        "lastModified": "2026-10-02T14:30:28.440",
        "metrics": {},
        "published": "2026-10-02T10:17:06.303",
        "references": [
          {
            "source": "security@apache.org",
            "url": "https://lists.apache.org/thread.html/fn3bwknn57266hx66w9vv6b4k8rfwcx7"
          }
        ],
        "sourceIdentifier": "security@apache.org",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-121"
              }
            ],
            "source": "security@apache.org",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



Log in or create an account to share your comment.




Tags
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.



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.