Vulnerability-Lookup

GHSA-6R46-2QJX-J5J3

Vulnerability from github – Published: 2026-03-24 15:30 – Updated: 2026-03-24 15:30

Details

NGINX Open Source and NGINX Plus have a vulnerability in the ngx_http_dav_module module that might allow an attacker to trigger a buffer overflow to the NGINX worker process; this vulnerability may result in termination of the NGINX worker process or modification of source or destination file names outside the document root. This issue affects NGINX Open Source and NGINX Plus when the configuration file uses DAV module MOVE or COPY methods, prefix location (nonregular expression location configuration), and alias directives. The integrity impact is constrained because the NGINX worker process user has low privileges and does not have access to the entire system. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Severity ?

8.2 (High)


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

8.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-27654"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-122"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-24T15:16:33Z",
    "severity": "HIGH"
  },
  "details": "NGINX Open Source and NGINX Plus have a vulnerability in the ngx_http_dav_module module that might allow an attacker to trigger a buffer overflow to the NGINX worker process; this vulnerability may result in termination of the NGINX worker process or modification of source or destination file names outside the document root. This issue affects NGINX Open Source and NGINX Plus when the configuration file uses DAV module MOVE or COPY methods, prefix location (nonregular expression location configuration), and alias directives. The integrity impact is constrained because the NGINX worker process user has low privileges and does not have access to the entire system. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.",
  "id": "GHSA-6r46-2qjx-j5j3",
  "modified": "2026-03-24T15:30:29Z",
  "published": "2026-03-24T15:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27654"
    },
    {
      "type": "WEB",
      "url": "https://my.f5.com/manage/s/article/K000160382"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/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"
    }
  ]
}

CVE-2026-27654 (GCVE-0-2026-27654)

Vulnerability from cvelistv5 – Published: 2026-03-24 14:13 – Updated: 2026-03-24 15:15

Title

NGINX ngx_http_dav_module vulnerability

Summary

Severity ?

8.2 (High)


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

8.8 (High)


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

CWE

CWE-122 - Heap-based Buffer Overflow

Assigner

References

URL

Tags

https://my.f5.com/manage/s/article/K000160382

vendor-advisory

Impacted products

Vendor

Product

Version

NGINX Open Source

Affected: 1.29.0 , < 1.29.7 (semver)
Affected: 0.5.13 , < 1.28.3 (semver)

NGINX Plus

Affected: R36 , < R36 P3 (custom)
Affected: R35 , < R35 P2 (custom)
Affected: R34 , < * (custom)
Affected: R33 , < * (custom)
Affected: R32 , < R32 P5 (custom)

Date Public ?

2026-03-24 14:00

Credits

F5 acknowledges Calif.io in collaboration with Claude and Anthropic Research for bringing this issue to our attention and following the highest standards of coordinated disclosure.

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JSON

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  "containers": {
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        "metrics": [
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            "other": {
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                "id": "CVE-2026-27654",
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                  },
                  {
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                  },
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                    "Technical Impact": "partial"
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-24T15:14:50.235649Z",
                "version": "2.0.3"
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          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    "cna": {
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          ],
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          "vendor": "F5",
          "versions": [
            {
              "lessThan": "1.29.7",
              "status": "affected",
              "version": "1.29.0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.28.3",
              "status": "affected",
              "version": "0.5.13",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "modules": [
            "ngx_http_dav_module"
          ],
          "product": "NGINX Plus",
          "vendor": "F5",
          "versions": [
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              "lessThan": "R36 P3",
              "status": "affected",
              "version": "R36",
              "versionType": "custom"
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              "lessThan": "R35 P2",
              "status": "affected",
              "version": "R35",
              "versionType": "custom"
            },
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            },
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            },
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            }
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      "metrics": [
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          },
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          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
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        },
        {
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            "subConfidentialityImpact": "NONE",
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            "valueDensity": "NOT_DEFINED",
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              "value": "GENERAL"
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              "lang": "en",
              "type": "CWE"
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      ],
      "providerMetadata": {
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        "orgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab",
        "shortName": "f5"
      },
      "references": [
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          "tags": [
            "vendor-advisory"
          ],
          "url": "https://my.f5.com/manage/s/article/K000160382"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "NGINX ngx_http_dav_module vulnerability",
      "x_generator": {
        "engine": "F5 SIRTBot v1.0"
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  },
  "cveMetadata": {
    "assignerOrgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab",
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    "datePublished": "2026-03-24T14:13:26.879Z",
    "dateReserved": "2026-03-18T16:06:38.448Z",
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Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-6R46-2QJX-J5J3

CVE-2026-27654 (GCVE-0-2026-27654)

Tags

Sightings

Nomenclature