Vulnerability-Lookup

CVE-2026-50151 (GCVE-0-2026-50151)

Vulnerability from cvelistv5 – Published: 2026-07-17 19:41 – Updated: 2026-07-17 19:41

Title

oras-go: credential forwarding via unvalidated Location header in blob upload

Summary

oras-go is a Go library for managing OCI artifacts. Prior to 2.6.1, registry/remote/repository.go in blobStore.completePushAfterInitialPost follows a registry-controlled Location header during monolithic blob upload and reuses the Authorization header from the initial POST request for the subsequent PUT request, allowing a malicious registry to return a cross-host Location and receive the caller's credentials at an attacker-controlled endpoint. This issue is fixed in version 2.6.1.

Severity

7.5 (High)


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

CWE

CWE-918 - Server-Side Request Forgery (SSRF)

Assigner

GitHub_M

References

4 references

URL	Tags
https://github.com/oras-project/oras-go/security/…	x_refsource_CONFIRM
https://github.com/oras-project/oras-go/pull/1152	x_refsource_MISC
https://github.com/oras-project/oras-go/commit/46…	x_refsource_MISC
https://github.com/oras-project/oras-go/releases/…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
oras-project	oras-go	Affected: < 2.6.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "oras-go",
          "vendor": "oras-project",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.6.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "oras-go is a Go library for managing OCI artifacts. Prior to 2.6.1, registry/remote/repository.go in blobStore.completePushAfterInitialPost follows a registry-controlled Location header during monolithic blob upload and reuses the Authorization header from the initial POST request for the subsequent PUT request, allowing a malicious registry to return a cross-host Location and receive the caller\u0027s credentials at an attacker-controlled endpoint. This issue is fixed in version 2.6.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-918",
              "description": "CWE-918: Server-Side Request Forgery (SSRF)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-17T19:41:11.648Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/oras-project/oras-go/security/advisories/GHSA-jxpm-75mh-9fp7",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/oras-project/oras-go/security/advisories/GHSA-jxpm-75mh-9fp7"
        },
        {
          "name": "https://github.com/oras-project/oras-go/pull/1152",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/oras-project/oras-go/pull/1152"
        },
        {
          "name": "https://github.com/oras-project/oras-go/commit/4683c46ef078091544f5f55fd25102f002806991",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/oras-project/oras-go/commit/4683c46ef078091544f5f55fd25102f002806991"
        },
        {
          "name": "https://github.com/oras-project/oras-go/releases/tag/v2.6.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/oras-project/oras-go/releases/tag/v2.6.1"
        }
      ],
      "source": {
        "advisory": "GHSA-jxpm-75mh-9fp7",
        "discovery": "UNKNOWN"
      },
      "title": "oras-go: credential forwarding via unvalidated Location header in blob upload"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-50151",
    "datePublished": "2026-07-17T19:41:11.648Z",
    "dateReserved": "2026-06-03T20:54:20.431Z",
    "dateUpdated": "2026-07-17T19:41:11.648Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-50151\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-07-17T20:17:23.683\",\"lastModified\":\"2026-07-17T20:17:23.683\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"oras-go is a Go library for managing OCI artifacts. Prior to 2.6.1, registry/remote/repository.go in blobStore.completePushAfterInitialPost follows a registry-controlled Location header during monolithic blob upload and reuses the Authorization header from the initial POST request for the subsequent PUT request, allowing a malicious registry to return a cross-host Location and receive the caller\u0027s credentials at an attacker-controlled endpoint. This issue is fixed in version 2.6.1.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"oras-project\",\"product\":\"oras-go\",\"versions\":[{\"version\":\"\u003c 2.6.1\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-918\"}]}],\"references\":[{\"url\":\"https://github.com/oras-project/oras-go/commit/4683c46ef078091544f5f55fd25102f002806991\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/oras-project/oras-go/pull/1152\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/oras-project/oras-go/releases/tag/v2.6.1\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/oras-project/oras-go/security/advisories/GHSA-jxpm-75mh-9fp7\",\"source\":\"security-advisories@github.com\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-17T20:04:52+00:00",
      "cve": "CVE-2026-50151",
      "id": "CVE-2026-50151",
      "initial_release_date": "2026-07-01T21:35:45+00:00",
      "product_status:under_investigation": "33",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "oras-go: oras-go: Credential forwarding via unvalidated Location header during blob upload",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50151.json",
      "version": "3"
    }
  }
}

FKIE_CVE-2026-50151

Vulnerability from fkie_nvd - Published: 2026-07-17 20:17 - Updated: 2026-07-17 20:17

Severity

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

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/oras-project/oras-go/commit/4683c46ef078091544f5f55fd25102f002806991
	security-advisories@github.com	https://github.com/oras-project/oras-go/pull/1152
	security-advisories@github.com	https://github.com/oras-project/oras-go/releases/tag/v2.6.1
	security-advisories@github.com	https://github.com/oras-project/oras-go/security/advisories/GHSA-jxpm-75mh-9fp7

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "oras-go",
          "vendor": "oras-project",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.6.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "oras-go is a Go library for managing OCI artifacts. Prior to 2.6.1, registry/remote/repository.go in blobStore.completePushAfterInitialPost follows a registry-controlled Location header during monolithic blob upload and reuses the Authorization header from the initial POST request for the subsequent PUT request, allowing a malicious registry to return a cross-host Location and receive the caller\u0027s credentials at an attacker-controlled endpoint. This issue is fixed in version 2.6.1."
    }
  ],
  "id": "CVE-2026-50151",
  "lastModified": "2026-07-17T20:17:23.683",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-07-17T20:17:23.683",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/oras-project/oras-go/commit/4683c46ef078091544f5f55fd25102f002806991"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/oras-project/oras-go/pull/1152"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/oras-project/oras-go/releases/tag/v2.6.1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/oras-project/oras-go/security/advisories/GHSA-jxpm-75mh-9fp7"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}

GHSA-JXPM-75MH-9FP7

Vulnerability from github – Published: 2026-07-01 21:35 – Updated: 2026-07-01 21:35

Summary

oras-go blob upload vulnerable to credential forwarding via unvalidated Location header

Details

Summary

oras-go follows a registry-controlled Location header during the monolithic blob upload flow and reuses the Authorization header from the initial POST request for the subsequent PUT request. If a malicious registry returns a cross-host Location, oras-go can send the caller's credentials to an attacker-controlled endpoint.

Affected Versions

tested: v2.6.0 (commit 03243809936cce826494b5506f724c6dc11115b1, as-of 2026-01-24) range: unknown; likely affects earlier v2.x releases that include the same upload flow

Impact

Credential leak to an attacker-controlled endpoint and client-side ssrf to a cross-host target.

Affected Component

registry/remote/repository.go:878-916 (blobStore.completePushAfterInitialPost)

Reproduction

Attachments include poc.zip with a local-only harness (no real registry required). It runs a fake registry server that returns a cross-host Location and a second server that records whether it received Authorization.

unzip -q -o poc.zip -d /tmp/poc
cd /tmp/poc/poc-F-ORAS-LOCATION-UPLOAD-001
make canonical
make control

Recommended Fix

validate Location before uploading (scheme + hostname + effective port) against the original request, or require an explicit opt-in allowlist for cross-host upload urls
never forward Authorization when the upload target changes host or scheme

references

security policy: https://github.com/oras-project/oras-go/security/policy
vulnerable code: registry/remote/repository.go (see blobStore.completePushAfterInitialPost)

Severity

7.5 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "oras.land/oras-go/v2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.6.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-50151"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-01T21:35:45Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "## Summary\n\noras-go follows a registry-controlled `Location` header during the monolithic blob upload flow and reuses the `Authorization` header from the initial `POST` request for the subsequent `PUT` request. If a malicious registry returns a cross-host `Location`, oras-go can send the caller\u0027s credentials to an attacker-controlled endpoint.\n\n## Affected Versions\n\ntested: v2.6.0 (commit 03243809936cce826494b5506f724c6dc11115b1, as-of 2026-01-24)\nrange: unknown; likely affects earlier v2.x releases that include the same upload flow\n\n## Impact\n\nCredential leak to an attacker-controlled endpoint and client-side ssrf to a cross-host target.\n\n## Affected Component\n\n- `registry/remote/repository.go:878-916` (`blobStore.completePushAfterInitialPost`)\n\n## Reproduction\n\nAttachments include `poc.zip` with a local-only harness (no real registry required). It runs a fake registry server that returns a cross-host `Location` and a second server that records whether it received `Authorization`.\n\n```bash\nunzip -q -o poc.zip -d /tmp/poc\ncd /tmp/poc/poc-F-ORAS-LOCATION-UPLOAD-001\nmake canonical\nmake control\n```\n\n## Recommended Fix\n\n- validate `Location` before uploading (scheme + hostname + effective port) against the original request, or require an explicit opt-in allowlist for cross-host upload urls\n- never forward `Authorization` when the upload target changes host or scheme\n\n## references\n\n- security policy: https://github.com/oras-project/oras-go/security/policy\n- vulnerable code: `registry/remote/repository.go` (see `blobStore.completePushAfterInitialPost`)",
  "id": "GHSA-jxpm-75mh-9fp7",
  "modified": "2026-07-01T21:35:45Z",
  "published": "2026-07-01T21:35:45Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/oras-project/oras-go/security/advisories/GHSA-jxpm-75mh-9fp7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/oras-project/oras-go/pull/1152"
    },
    {
      "type": "WEB",
      "url": "https://github.com/oras-project/oras-go/commit/4683c46ef078091544f5f55fd25102f002806991"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/oras-project/oras-go"
    },
    {
      "type": "WEB",
      "url": "https://github.com/oras-project/oras-go/releases/tag/v2.6.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "oras-go blob upload vulnerable to credential forwarding via unvalidated Location header"
}

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.

Action not permitted

CVE-2026-50151 (GCVE-0-2026-50151)

FKIE_CVE-2026-50151

GHSA-JXPM-75MH-9FP7

Summary

Affected Versions

Impact

Affected Component

Reproduction

Recommended Fix

references

Tags

Sightings

Nomenclature