Vulnerability-Lookup

GHSA-6P2V-36C6-F6M5

Vulnerability from github – Published: 2026-08-05 06:30 – Updated: 2026-08-05 06:30

Details

In OpenStack Swift through 2.38.0, the S3API middleware does not sanitize Swift-native control headers (X-Copy-From, X-Copy-From-Account) from S3 API requests when s3_acl=true. An attacker can inject these headers into a signed PUT request targeting their own bucket, causing Swift to perform a server-side copy from another tenant's private object. The source object authorization is bypassed because the S3API middleware has already authorized the request against the destination. The attacker can read any object whose project_id, container name, and object name are known, regardless of the source object's ACLs or ownership. This requires the non-default s3_acl=true configuration.

Severity

6.0 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-71192"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-05T06:16:40Z",
    "severity": "MODERATE"
  },
  "details": "In OpenStack Swift through 2.38.0, the S3API middleware does not sanitize Swift-native control headers (X-Copy-From, X-Copy-From-Account) from S3 API requests when s3_acl=true. An\nattacker can inject these headers into a signed PUT request targeting their own bucket, causing Swift to perform a server-side copy from another tenant\u0027s private object. The source object authorization is bypassed because the S3API middleware has already authorized the request against the destination. The attacker can read any object whose project_id, container name, and object name are known, regardless of the source object\u0027s ACLs or ownership. This requires the non-default s3_acl=true configuration.",
  "id": "GHSA-6p2v-36c6-f6m5",
  "modified": "2026-08-05T06:30:33Z",
  "published": "2026-08-05T06:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-71192"
    },
    {
      "type": "WEB",
      "url": "https://launchpad.net/bugs/2158733"
    },
    {
      "type": "WEB",
      "url": "https://openwall.com/lists/oss-security/2026/07/28/26"
    },
    {
      "type": "WEB",
      "url": "https://security.openstack.org/ossa/OSSA-2026-030.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/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-2026-71192 (GCVE-0-2026-71192)

Vulnerability from cvelistv5 – Published: 2026-08-05 05:05 – Updated: 2026-08-05 13:31

Summary

Severity

6 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-863 - Incorrect Authorization

Assigner

mitre

References

3 references

URL	Tags
https://launchpad.net/bugs/2158733	issue-tracking
https://openwall.com/lists/oss-security/2026/07/28/26	vendor-advisorymailing-list
https://security.openstack.org/ossa/OSSA-2026-030.html	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenStack	Swift	Affected: 2.18.0 , < 2.35.4 (semver) Affected: 2.36.0 , < 2.36.3 (semver) Affected: 2.37.0 , < 2.37.3 (semver) Affected: 2.38.0 (semver)

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JSON

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        "metrics": [
          {
            "other": {
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                "id": "CVE-2026-71192",
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                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-05T13:31:24.534760Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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        "providerMetadata": {
          "dateUpdated": "2026-08-05T13:31:30.582Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    "cna": {
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    "dateReserved": "2026-08-05T05:05:32.904Z",
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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.

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.

Action not permitted

GHSA-6P2V-36C6-F6M5

CVE-2026-71192 (GCVE-0-2026-71192)

Tags

Sightings

Nomenclature