Vulnerability-Lookup

GHSA-7G92-2J5X-MJ6H

Vulnerability from github – Published: 2026-09-15 12:31 – Updated: 2026-09-15 12:31

Details

pig before 4.1.0 contains an authentication bypass vulnerability in the /register/password endpoint where password verification results are discarded, allowing any value as the current password. Remote attackers can submit a username with an incorrect current password to overwrite any account credential including the admin account and gain full administrative control.

Severity

9.1 (Critical)


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

9.3 (Critical)


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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-91995"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-620"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-15T12:17:54Z",
    "severity": "CRITICAL"
  },
  "details": "pig before 4.1.0 contains an authentication bypass vulnerability in the /register/password endpoint where password verification results are discarded, allowing any value as the current password. Remote attackers can submit a username with an incorrect current password to overwrite any account credential including the admin account and gain full administrative control.",
  "id": "GHSA-7g92-2j5x-mj6h",
  "modified": "2026-09-15T12:31:47Z",
  "published": "2026-09-15T12:31:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-91995"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pig-mesh/pig/issues/1249"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pig-mesh/pig/commit/ce958668f399110b97b3f1fcc5f517ff9bcfd535"
    },
    {
      "type": "WEB",
      "url": "https://github.com/geo-chen/oss/blob/main/pig.md"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pig-mesh/pig"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pig-mesh/pig/blob/v4.0.0/pig-upms/pig-upms-biz/src/main/java/com/pig4cloud/pig/admin/controller/SysRegisterController.java#L21-L53"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pig-mesh/pig/blob/v4.0.0/pig-upms/pig-upms-biz/src/main/java/com/pig4cloud/pig/admin/service/impl/SysUserServiceImpl.java#L650-L669"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/pig-before-4.1.0-unverified-password-change-via-register-password"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-91995 (GCVE-0-2026-91995)

Vulnerability from cvelistv5 – Published: 2026-09-15 11:35 – Updated: 2026-09-15 11:35

Title

pig before 4.1.0 Unverified Password Change via /register/password

Summary

Severity

9.3 (Critical)


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

9.1 (Critical)


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

CWE

CWE-620 - Unverified Password Change

Assigner

VulnCheck mitre root

References

7 references

URL	Tags
https://github.com/geo-chen/oss/blob/main/pig.md	third-party-advisoryexploit
https://github.com/pig-mesh/pig/issues/1249	issue-tracking
https://github.com/pig-mesh/pig/commit/ce958668f3…	patch
https://github.com/pig-mesh/pig/blob/v4.0.0/pig-u…	technical-description
https://github.com/pig-mesh/pig/blob/v4.0.0/pig-u…	technical-description
https://github.com/pig-mesh/pig	product
https://www.vulncheck.com/advisories/pig-before-4…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
pig-mesh	pig	Affected: 0 , < 4.1.0 (semver)

Date Public

2026-09-14 00:00

Credits

George Chen

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:github/pig-mesh/pig",
          "product": "pig",
          "repo": "https://github.com/pig-mesh/pig",
          "vendor": "pig-mesh",
          "versions": [
            {
              "lessThan": "4.1.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "George Chen"
        }
      ],
      "datePublic": "2026-09-14T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "pig before 4.1.0 contains an authentication bypass vulnerability in the /register/password endpoint where password verification results are discarded, allowing any value as the current password. Remote attackers can submit a username with an incorrect current password to overwrite any account credential including the admin account and gain full administrative control."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 9.3,
            "baseSeverity": "CRITICAL",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-620",
              "description": "Unverified Password Change",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-15T11:35:50.060Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "Researcher write-up",
          "tags": [
            "third-party-advisory",
            "exploit"
          ],
          "url": "https://github.com/geo-chen/oss/blob/main/pig.md"
        },
        {
          "name": "GitHub Issue #1249 (content redacted by the maintainer)",
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/pig-mesh/pig/issues/1249"
        },
        {
          "name": "Fix commit ce958668",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/pig-mesh/pig/commit/ce958668f399110b97b3f1fcc5f517ff9bcfd535"
        },
        {
          "name": "SysUserServiceImpl.java at v4.0.0",
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/pig-mesh/pig/blob/v4.0.0/pig-upms/pig-upms-biz/src/main/java/com/pig4cloud/pig/admin/service/impl/SysUserServiceImpl.java#L650-L669"
        },
        {
          "name": "SysRegisterController.java at v4.0.0",
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/pig-mesh/pig/blob/v4.0.0/pig-upms/pig-upms-biz/src/main/java/com/pig4cloud/pig/admin/controller/SysRegisterController.java#L21-L53"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/pig-mesh/pig"
        },
        {
          "name": "VulnCheck Advisory: pig before 4.1.0 Unverified Password Change via /register/password",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/pig-before-4.1.0-unverified-password-change-via-register-password"
        }
      ],
      "title": "pig before 4.1.0 Unverified Password Change via /register/password",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-91995",
    "datePublished": "2026-09-15T11:35:50.060Z",
    "dateReserved": "2026-09-15T11:11:13.312Z",
    "dateUpdated": "2026-09-15T11:35:50.060Z",
    "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.

Detection rules are retrieved from Rulezet.

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.