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Fallow: Jest and Vitest `projects` entries let an analyzed repository make Fallow read files outside the project root

Type: advisorySources: OSV

Fallow is a codebase intelligence tool for TypeScript and JavaScript. From 2.68.0 until 3.34.0, Fallow follows attacker-controlled Jest projects paths outside the project root through absolute paths, parent segments, dot-prefixed wildcard globs, or symlinks. In version 3.33.1, the same behavior also affects Vitest test.projects paths, Vitest inline-project extends paths, and symlinked script --config paths. Fallow parses the outside files as test-runner configuration and uses them to credit dependencies, setup files, and JSX import sources, which can change unused dependency and unused file findings in CI or agent analysis. The outside file contents are not printed or sent over the network. This issue is fixed in version 3.34.0.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-115569
Confirmed fixed CVEs
Not specified
Updated in this feed
2 Nov 2026, 22:43 UTC · Revision 1

Source evidence

Fallow: Jest and Vitest `projects` entries let an analyzed repository make Fallow read files outside the project root

core-osv · Original source

Published 23 Oct 2026, 18:09 UTC

Fallow is a codebase intelligence tool for TypeScript and JavaScript. From 2.68.0 until 3.34.0, Fallow follows attacker-controlled Jest projects paths outside the project root through absolute paths, parent segments, dot-prefixed wildcard globs, or symlinks. In version 3.33.1, the same behavior also affects Vitest test.projects paths, Vitest inline-project extends paths, and symlinked script --config paths. Fallow parses the outside files as test-runner configuration and uses them to credit dependencies, setup files, and JSX import sources, which can change unused dependency and unused file findings in CI or agent analysis. The outside file contents are not printed or sent over the network. This issue is fixed in version 3.34.0.

osv:CVE-2026-115569
Complete source record
{
  "id": "bef05ce0e0a40a08e14e0c38f99483cde19b671ee26fdb0afe9a1eb66a67a2fc",
  "url": "https://osv.dev/vulnerability/CVE-2026-115569",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Fallow: Jest and Vitest `projects` entries let an analyzed repository make Fallow read files outside the project root",
    "summary": "Fallow is a codebase intelligence tool for TypeScript and JavaScript. From 2.68.0 until 3.34.0, Fallow follows attacker-controlled Jest projects paths outside the project root through absolute paths, parent segments, dot-prefixed wildcard globs, or symlinks. In version 3.33.1, the same behavior also affects Vitest test.projects paths, Vitest inline-project extends paths, and symlinked script --config paths. Fallow parses the outside files as test-runner configuration and uses them to credit dependencies, setup files, and JSX import sources, which can change unused dependency and unused file findings in CI or agent analysis. The outside file contents are not printed or sent over the network. This issue is fixed in version 3.34.0.",
    "evidence": "osv:CVE-2026-115569",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2026-115569",
      "aliases": [
        "CVE-2026-115569",
        "GHSA-jfwm-3p3c-6hx5"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/fallow-rs/fallow",
              "type": "GIT",
              "events": [
                {
                  "introduced": "ffa223da4e3969e822fd4a6a0658bcdf939ebe35"
                },
                {
                  "fixed": "2823b6588b26e582124977135b9998efeb6959ad"
                },
                {
                  "fixed": "75c0c60948a53ddfe042e65b446343989f4c5649"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "2.68.0"
                      },
                      {
                        "fixed": "3.34.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "75c0c60948a53ddfe042e65b446343989f4c5649"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "2823b6588b26e582124977135b9998efeb6959ad"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v3.34.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.33.1",
            "v3.33.0",
            "v3.32.0",
            "v3.31.0",
            "v3.30.0",
            "v3.29.0",
            "v3.28.0",
            "v3.27.0",
            "v3.26.0",
            "v3.25.0",
            "v3.24.1",
            "v3.24.0",
            "v3.23.0",
            "v3.22.0",
            "v3.21.0",
            "v3.20.0",
            "v3.19.0",
            "v3.18.0",
            "v3.17.0",
            "v3.16.0",
            "v3.15.0",
            "v3.14.0",
            "v3.13.0",
            "v3.12.0",
            "v3.11.0",
            "v3.10.0",
            "v3.9.1",
            "v3.9.0",
            "v3.8.1",
            "v3.8.0",
            "v3.7.1",
            "v3.7.0",
            "v3.6.0",
            "v3.5.0",
            "v3.4.2",
            "v3.3.0",
            "v3.2.0",
            "v3.1.0",
            "v3.0.0",
            "v2.104.0",
            "v2",
            "v2.103.0",
            "v2.102.0",
            "v2.101.0",
            "v2.100.0",
            "v2.99.0",
            "v2.98.0",
            "v2.97.0",
            "v2.96.0",
            "v2.95.0",
            "v2.94.0",
            "v2.93.0",
            "v2.92.1",
            "v2.91.0",
            "v2.90.0",
            "v2.89.0",
            "v2.88.3",
            "v2.88.2",
            "v2.88.1",
            "v2.88.0",
            "v2.87.0",
            "v2.86.0",
            "v2.84.0",
            "v2.83.0",
            "v2.82.0",
            "v2.81.0",
            "v2.80.0",
            "v2.79.0",
            "v2.78.1",
            "v2.78.0",
            "v2.77.0",
            "v2.76.0",
            "v2.75.0",
            "v2.74.0",
            "v2.73.0",
            "v2.72.0",
            "v2.71.0",
            "v2.70.0",
            "v2.69.0",
            "v2.68.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-115569.json"
          }
        }
      ],
      "modified": "2026-11-01T02:30:49.726137527Z",
      "provider": "osv",
      "references": [
        "https://github.com/fallow-rs/fallow/releases/tag/v3.34.0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115569.json",
        "https://github.com/fallow-rs/fallow/security/advisories/GHSA-jfwm-3p3c-6hx5",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-115569",
        "https://github.com/fallow-rs/fallow/commit/75c0c60948a53ddfe042e65b446343989f4c5649",
        "https://github.com/fallow-rs/fallow/pull/3556"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-22",
          "CWE-59"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115569.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-115569",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 490648,
  "published_at": "2026-10-23T18:09:47.722+00:00"
}