Vulnerability-Lookup

FKIE_CVE-2026-81525

Vulnerability from fkie_nvd - Published: 2026-08-27 20:18 - Updated: 2026-09-29 19:17

Severity

8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Summary

The MongoDB client library for PHP does not sufficiently sanitize special elements in application-supplied namespace identifiers before using them to construct the target namespace for database operations. An application that incorporates untrusted text into these identifiers may have operations silently directed at a different storage location than the one the application intended.

References

URL	Tags
cna@mongodb.com	https://github.com/mongodb/mongo-php-driver/releases/tag/1.21.6	Product, Release Notes
cna@mongodb.com	https://github.com/mongodb/mongo-php-driver/releases/tag/2.4.1	Product, Release Notes
cna@mongodb.com	https://github.com/mongodb/mongo-php-library/releases/tag/1.21.4	Product, Release Notes
cna@mongodb.com	https://github.com/mongodb/mongo-php-library/releases/tag/2.4.1	Product, Release Notes
cna@mongodb.com	https://jira.mongodb.org/browse/PHPLIB-1927	Vendor Advisory

Impacted products

Vendor	Product	Version
mongodb	php_driver	*
mongodb	php_driver	*
mongodb	php_library	*
mongodb	php_library	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "PHP Library",
          "vendor": "MongoDB",
          "versions": [
            {
              "lessThan": "1.21.4",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "2.4.1",
              "status": "affected",
              "version": "2.0.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "PHP Extension",
          "vendor": "MongoDB",
          "versions": [
            {
              "lessThan": "1.21.6",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "2.4.1",
              "status": "affected",
              "version": "2.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "cna@mongodb.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mongodb:php_driver:*:*:*:*:*:mongodb:*:*",
              "matchCriteriaId": "7119CCA6-A7EB-479D-A8DD-BB113E716270",
              "versionEndExcluding": "1.21.6",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mongodb:php_driver:*:*:*:*:*:mongodb:*:*",
              "matchCriteriaId": "31E27BE9-0F03-4575-A410-03D44EC2EB6A",
              "versionEndExcluding": "2.4.1",
              "versionStartIncluding": "2.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mongodb:php_library:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "01866C7B-FB73-48D4-BC21-20AEF754D2C5",
              "versionEndExcluding": "1.21.4",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mongodb:php_library:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "9B6C06A6-B674-47E0-8CC0-AE688075AB99",
              "versionEndExcluding": "2.4.1",
              "versionStartIncluding": "2.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The MongoDB client library for PHP does not sufficiently sanitize special elements in application-supplied namespace identifiers before using them to construct the target namespace for database operations. An application that incorporates untrusted text into these identifiers may have operations silently directed at a different storage location than the one the application intended."
    }
  ],
  "id": "CVE-2026-81525",
  "lastModified": "2026-09-29T19:17:04.850",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.1,
          "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:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.2,
        "source": "cna@mongodb.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.6,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cna@mongodb.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-81525",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-28T15:48:47.805241Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-27T20:18:50.913",
  "references": [
    {
      "source": "cna@mongodb.com",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "url": "https://github.com/mongodb/mongo-php-driver/releases/tag/1.21.6"
    },
    {
      "source": "cna@mongodb.com",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "url": "https://github.com/mongodb/mongo-php-driver/releases/tag/2.4.1"
    },
    {
      "source": "cna@mongodb.com",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "url": "https://github.com/mongodb/mongo-php-library/releases/tag/1.21.4"
    },
    {
      "source": "cna@mongodb.com",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "url": "https://github.com/mongodb/mongo-php-library/releases/tag/2.4.1"
    },
    {
      "source": "cna@mongodb.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://jira.mongodb.org/browse/PHPLIB-1927"
    }
  ],
  "sourceIdentifier": "cna@mongodb.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-943"
        }
      ],
      "source": "cna@mongodb.com",
      "type": "Secondary"
    }
  ]
}

CVE-2026-81525 (GCVE-0-2026-81525)

Vulnerability from cvelistv5 – Published: 2026-08-27 18:32 – Updated: 2026-08-28 15:49

Title

Cross-tenant database retargeting via dot/NUL injection in namespace strings in the PHP Driver

Summary

Severity

8.6 (High)


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

8.1 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-28 15:48 UTC

CWE

CWE-943 - Improper Neutralization of Special Elements in Data Query Logic

Assigner

mongodb mitre root Scorecard

References

5 references

URL	Tags
https://jira.mongodb.org/browse/PHPLIB-1927
https://github.com/mongodb/mongo-php-library/rele…
https://github.com/mongodb/mongo-php-library/rele…
https://github.com/mongodb/mongo-php-driver/relea…
https://github.com/mongodb/mongo-php-driver/relea…

Impacted products

2 products

Vendor	Product	Version
MongoDB	PHP Library	Affected: 0 , < 1.21.4 (semver) Affected: 2.0.0 , < 2.4.1 (semver)
MongoDB	PHP Extension	Affected: 0 , < 1.21.6 (semver) Affected: 2.0.0 , < 2.4.1 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-81525",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-28T15:48:47.805241Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-28T15:49:03.964Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "PHP Library",
          "vendor": "MongoDB",
          "versions": [
            {
              "lessThan": "1.21.4",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "2.4.1",
              "status": "affected",
              "version": "2.0.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "PHP Extension",
          "vendor": "MongoDB",
          "versions": [
            {
              "lessThan": "1.21.6",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "2.4.1",
              "status": "affected",
              "version": "2.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "The MongoDB client library for PHP does not sufficiently sanitize special elements in application-supplied namespace identifiers before using them to construct the target namespace for database operations. An application that incorporates untrusted text into these identifiers may have operations silently directed at a different storage location than the one the application intended."
            }
          ],
          "value": "The MongoDB client library for PHP does not sufficiently sanitize special elements in application-supplied namespace identifiers before using them to construct the target namespace for database operations. An application that incorporates untrusted text into these identifiers may have operations silently directed at a different storage location than the one the application intended."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
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        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.1,
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            "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:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
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          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-943",
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      "providerMetadata": {
        "dateUpdated": "2026-08-27T20:42:01.763Z",
        "orgId": "a39b4221-9bd0-4244-95fc-f3e2e07f1deb",
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      "references": [
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        },
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          "url": "https://github.com/mongodb/mongo-php-library/releases/tag/1.21.4"
        },
        {
          "url": "https://github.com/mongodb/mongo-php-library/releases/tag/2.4.1"
        },
        {
          "url": "https://github.com/mongodb/mongo-php-driver/releases/tag/1.21.6"
        },
        {
          "url": "https://github.com/mongodb/mongo-php-driver/releases/tag/2.4.1"
        }
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    "cveId": "CVE-2026-81525",
    "datePublished": "2026-08-27T18:32:26.493Z",
    "dateReserved": "2026-08-26T22:14:05.297Z",
    "dateUpdated": "2026-08-28T15:49:03.964Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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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FKIE_CVE-2026-81525

CVE-2026-81525 (GCVE-0-2026-81525)

Tags

Sightings

Nomenclature

Related by attack behaviour