What’s Vulnerable › Vulnerabilities

CVE-2026-109965: Serena before 2.0.0 Symlink Following in File Tools Allows Access Outside Project Root

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-13 · updated 2026-10-16
• Weakness: CWE-59

Description

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.

Affected products

• oraios serena: before 2.0.0 — fixed in 2.0.0

How to fix

Upgrade to a fixed version: oraios serena 2.0.0. Check the vendor advisory for mitigations.

References

• https://github.com/oraios/serena
• https://github.com/oraios/serena/blob/v1.7.0/src/serena/project.py
• https://github.com/oraios/serena/commit/6f20f9b822d85bb063008e786f808d04619dd54e
• https://github.com/oraios/serena/issues/2144
• https://github.com/oraios/serena/releases/tag/v2.0.0
• https://www.vulncheck.com/advisories/serena-before-2.0.0-symlink-following-in-file-tools-allows-access-outside-project-root
• https://github.com/oraios/serena/issues/2144

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