Vulnerability-Lookup

GHSA-JJHR-HR59-47H4

Vulnerability from github – Published: 2026-09-26 00:32 – Updated: 2026-09-26 00:32

Details

gitoxide gix-fs before 0.23.0 contains a path validation bypass vulnerability in the worktree checkout mechanism that allows attackers to escape the worktree directory via symlink manipulation. During forced checkout with overwrite_existing enabled, attackers can craft malicious repository trees where symlink entries replace validated directories, causing subsequent files to be written outside the worktree through the symlink for code execution or file manipulation.

Severity

7.0 (High)


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

7.3 (High)


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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-100419"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-25T22:17:10Z",
    "severity": "HIGH"
  },
  "details": "gitoxide gix-fs before 0.23.0 contains a path validation bypass vulnerability in the worktree checkout mechanism that allows attackers to escape the worktree directory via symlink manipulation. During forced checkout with overwrite_existing enabled, attackers can craft malicious repository trees where symlink entries replace validated directories, causing subsequent files to be written outside the worktree through the symlink for code execution or file manipulation.",
  "id": "GHSA-jjhr-hr59-47h4",
  "modified": "2026-09-26T00:32:18Z",
  "published": "2026-09-26T00:32:18Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-6p9q-f2xg-6pr5"
    },
    {
      "type": "WEB",
      "url": "https://github.com/GitoxideLabs/gitoxide/security/advisories/GHSA-f89h-2fjh-2r9q"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-100419"
    },
    {
      "type": "WEB",
      "url": "https://github.com/GitoxideLabs/gitoxide/commit/b62498378b8bc2c95863a044b700f2063b0b5875"
    },
    {
      "type": "WEB",
      "url": "https://github.com/GitoxideLabs/gitoxide"
    },
    {
      "type": "WEB",
      "url": "https://github.com/GitoxideLabs/gitoxide/blob/gix-fs-v0.22.1/gix-fs/src/stack.rs#L185-L196"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/gitoxide-gix-fs-before-0.23.0-worktree-escape-via-symlink"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/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-2026-100419 (GCVE-0-2026-100419)

Vulnerability from cvelistv5 – Published: 2026-09-25 22:04 – Updated: 2026-09-28 13:06

Title

gitoxide gix-fs before 0.23.0 Worktree Escape via Symlink

Summary

Severity

7.3 (High)


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

7 (High)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-28 13:05 UTC

CWE

CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Assigner

VulnCheck mitre root

References

6 references

URL	Tags
https://github.com/GitoxideLabs/gitoxide/security…	vendor-advisory
https://github.com/GitoxideLabs/gitoxide/commit/b…	patch
https://github.com/GitoxideLabs/gitoxide/blob/gix…	technical-description
https://github.com/GitoxideLabs/gitoxide/security…	relatedvendor-advisory
https://github.com/GitoxideLabs/gitoxide	product
https://www.vulncheck.com/advisories/gitoxide-gix…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
GitoxideLabs	gitoxide	Affected: 0 , < 0.23.0 (semver) Unaffected: 0.23.0 (semver) cpe:2.3:a:gitoxidelabs:gitoxide::::::::

Date Public

2026-09-25 00:00

Credits

euriconicacio

Show details on NVD website

JSON

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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.

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.

Action not permitted

GHSA-JJHR-HR59-47H4

CVE-2026-100419 (GCVE-0-2026-100419)

Tags

Sightings

Nomenclature

Related by attack behaviour