Vulnerability-Lookup

GHSA-2WJ2-6XQ8-F5RX

Vulnerability from github – Published: 2026-09-18 21:32 – Updated: 2026-09-18 21:32

Details

A flaw was found in cockpit-files. This vulnerability allows a local attacker to exploit a timing issue, known as a symlink race condition, during privileged file operations such as changing file ownership or permissions. By manipulating directory entries and winning this race, the attacker can redirect these operations to unintended files. This could lead to unauthorized changes in file ownership and permissions on arbitrary files, potentially compromising system integrity and availability by altering system or application states or rendering services unusable.

Severity

6.0 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-91203"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-363"
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-18T20:17:29Z",
    "severity": "MODERATE"
  },
  "details": "A flaw was found in cockpit-files. This vulnerability allows a local attacker to exploit a timing issue, known as a symlink race condition, during privileged file operations such as changing file ownership or permissions. By manipulating directory entries and winning this race, the attacker can redirect these operations to unintended files. This could lead to unauthorized changes in file ownership and permissions on arbitrary files, potentially compromising system integrity and availability by altering system or application states or rendering services unusable.",
  "id": "GHSA-2wj2-6xq8-f5rx",
  "modified": "2026-09-18T21:32:27Z",
  "published": "2026-09-18T21:32:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-91203"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-91203"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2465632"
    }
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  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-91203 (GCVE-0-2026-91203)

Vulnerability from cvelistv5 – Published: 2026-09-18 19:21 – Updated: 2026-09-18 22:37

Title

Cockpit-files: cockpit-files: arbitrary file ownership and permission modification via symlink race condition

Summary

Severity

6 (Medium)


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

CWE

CWE-363 - Race Condition Enabling Link Following

Assigner

redhat redhat root

References

2 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2026-91203	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2465632	issue-trackingx_refsource_REDHAT

Impacted products

2 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

Date Public

2026-09-18 16:34

Credits

This issue was discovered by Found by AISLE in partnership with Red Hat.

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  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10"
          ],
          "defaultStatus": "affected",
          "packageName": "cockpit-files",
          "product": "Red Hat Enterprise Linux 10",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9"
          ],
          "defaultStatus": "affected",
          "packageName": "cockpit-files",
          "product": "Red Hat Enterprise Linux 9",
          "vendor": "Red Hat"
        }
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          "lang": "en",
          "value": "This issue was discovered by Found by AISLE in partnership with Red Hat."
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        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "namespace": "https://access.redhat.com/security/updates/classification/",
              "value": "Moderate"
            },
            "type": "Red Hat severity rating"
          }
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            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:H",
            "version": "3.1"
          },
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      ],
      "problemTypes": [
        {
          "descriptions": [
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              "lang": "en",
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      "providerMetadata": {
        "dateUpdated": "2026-09-18T22:37:29.142Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
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        {
          "name": "RHBZ#2465632",
          "tags": [
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            "x_refsource_REDHAT"
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          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2465632"
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      "timeline": [
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          "lang": "en",
          "time": "2026-05-04T15:54:28.000Z",
          "value": "Reported to Red Hat."
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          "time": "2026-09-18T16:34:00.000Z",
          "value": "Made public."
        }
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      "title": "Cockpit-files: cockpit-files: arbitrary file ownership and permission modification via symlink race condition",
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    "datePublished": "2026-09-18T19:21:06.403Z",
    "dateReserved": "2026-09-14T21:59:00.235Z",
    "dateUpdated": "2026-09-18T22:37:29.142Z",
    "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.