---
id: CVE-2026-109965
title: >-
  Serena before 2.0.0 contains an improper link resolution vulnerability that
  allows attackers to access files outside the project root by committing
  symlinks inside a repository
summary: >-
  Serena before 2.0.0 contains an improper link resolution vulnerability that
  allows attackers to access files outside the project root by committing
  symlinks inside a repository. Project.is_path_in_project() normalizes paths
  lexically wit…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'
cwe:
  - CWE-59
published: '2026-10-13'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T16:17:19.647'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109965'
references:
  - url: 'https://github.com/oraios/serena'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/oraios/serena/blob/v1.7.0/src/serena/project.py'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/oraios/serena/commit/6f20f9b822d85bb063008e786f808d04619dd54e
    label: disclosure@vulncheck.com
  - url: 'https://github.com/oraios/serena/issues/2144'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/oraios/serena/releases/tag/v2.0.0'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/serena-before-2.0.0-symlink-following-in-file-tools-allows-access-outside-project-root
    label: disclosure@vulncheck.com
  - url: 'https://github.com/oraios/serena/issues/2144'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
ingestedAt: '2026-10-13T14:29:01.858Z'
---

## Overview

Serena before 2.0.0 contains an improper link resolution vulnerability that allows attackers to access files outside the project root by committing symlinks inside a repository. Project.is_path_in_project() normalizes paths lexically without resolving symlinks, so file tools like read_file and create_text_file can read or overwrite files such as SSH keys or cloud credentials.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.