Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2026-10-06 11:41

Modified

2026-10-06 12:12

Summary

Apache HTTP Server: mod_dav_fs namespace overflow

Details

Integer overflow in mod_dav_fs in Apache HTTP Server through 2.4.68 allows an authenticated WebDAV client with write access to crash worker processes and persistently corrupt a directory's property database via PROPPATCH requests declaring many XML namespaces.

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "apache",
        "purl": "pkg:bitnami/apache"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.69"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-93546"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*"
    ],
    "severity": "High"
  },
  "details": "Integer overflow in mod_dav_fs in Apache HTTP Server through 2.4.68 allows an authenticated WebDAV client with write access to crash worker processes and persistently corrupt a directory\u0027s property database via PROPPATCH requests declaring many XML namespaces.",
  "id": "BIT-apache-2026-93546",
  "modified": "2026-10-06T12:12:21.709Z",
  "published": "2026-10-06T11:41:09.369Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "http://www.openwall.com/lists/oss-security/2026/10/01/30"
    },
    {
      "type": "ADVISORY",
      "url": "https://httpd.apache.org/security/vulnerabilities_24.html"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93546"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Apache HTTP Server: mod_dav_fs namespace overflow"
}

CVE-2026-93546 (GCVE-0-2026-93546)

Vulnerability from cvelistv5 – Published: 2026-10-01 16:19 – Updated: 2026-10-01 20:09

Title

Apache HTTP Server: mod_dav_fs namespace overflow

Summary

Severity

8.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-01 19:38 UTC

CWE

CWE-190 - Integer overflow or wraparound

Assigner

apache mitre root Scorecard

References

2 references

URL	Tags
https://httpd.apache.org/security/vulnerabilities…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/1…

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache HTTP Server	Affected: 0 , ≤ 2.4.68 (semver)

Credits

Zhen Kong Calif.io in collaboration with Anthropic AISLE in partnership with Red Hat

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 8.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-93546",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-01T19:38:29.562581Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-01T19:38:34.954Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2026-10-01T20:09:35.921Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/10/01/30"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Apache HTTP Server",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThanOrEqual": "2.4.68",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Zhen Kong"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Calif.io in collaboration with Anthropic"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "AISLE in partnership with Red Hat"
        }
      ],
      "descriptions": [
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      "metrics": [
        {
          "other": {
            "content": {
              "text": "moderate"
            },
            "type": "Textual description of severity"
          },
          "scenarios": [
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              "lang": "en",
              "value": "GENERAL"
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      "providerMetadata": {
        "dateUpdated": "2026-10-01T16:19:32.662Z",
        "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "shortName": "apache"
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      "references": [
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          "tags": [
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          "url": "https://httpd.apache.org/security/vulnerabilities_24.html"
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      "source": {
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          "lang": "en",
          "time": "2026-07-28T12:00:00.000Z",
          "value": "reported"
        },
        {
          "lang": "en",
          "time": "2026-10-01T12:00:00.000Z",
          "value": "fixed in 2.4.x by r1938682"
        },
        {
          "lang": "eng",
          "time": "2026-10-01T12:00:00.000Z",
          "value": "2.4.69 released"
        }
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      "title": "Apache HTTP Server: mod_dav_fs namespace overflow",
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  },
  "cveMetadata": {
    "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
    "assignerShortName": "apache",
    "cveId": "CVE-2026-93546",
    "datePublished": "2026-10-01T16:19:32.662Z",
    "dateReserved": "2026-09-18T09:17:50.552Z",
    "dateUpdated": "2026-10-01T20:09:35.921Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}

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.

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.

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Vulnerability from bitnami_vulndb

CVE-2026-93546 (GCVE-0-2026-93546)

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