Vulnerability-Lookup

GHSA-F7X4-JGQG-5MC6

Vulnerability from github – Published: 2026-10-13 15:32 – Updated: 2026-10-13 15:32

Details

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.

Severity

7.1 (High)


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

8.4 (High)


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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-109965"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-13T14:17:36Z",
    "severity": "HIGH"
  },
  "details": "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.",
  "id": "GHSA-f7x4-jgqg-5mc6",
  "modified": "2026-10-13T15:32:24Z",
  "published": "2026-10-13T15:32:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109965"
    },
    {
      "type": "WEB",
      "url": "https://github.com/oraios/serena/issues/2144"
    },
    {
      "type": "WEB",
      "url": "https://github.com/oraios/serena/commit/6f20f9b822d85bb063008e786f808d04619dd54e"
    },
    {
      "type": "WEB",
      "url": "https://github.com/oraios/serena"
    },
    {
      "type": "WEB",
      "url": "https://github.com/oraios/serena/blob/v1.7.0/src/serena/project.py"
    },
    {
      "type": "WEB",
      "url": "https://github.com/oraios/serena/releases/tag/v2.0.0"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/serena-before-2.0.0-symlink-following-in-file-tools-allows-access-outside-project-root"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/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-2026-109965 (GCVE-0-2026-109965)

Vulnerability from cvelistv5 – Published: 2026-10-13 14:00 – Updated: 2026-10-13 15:29

Title

Serena before 2.0.0 Symlink Following in File Tools Allows Access Outside Project Root

Summary

Severity

8.4 (High)


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

7.1 (High)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-13 15:29 UTC

CWE

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

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 6516 records in the last 180 days details

References

6 references

URL	Tags
https://github.com/oraios/serena/issues/2144	issue-tracking
https://github.com/oraios/serena/commit/6f20f9b82…	patch
https://github.com/oraios/serena/releases/tag/v2.0.0	release-notes
https://github.com/oraios/serena/blob/v1.7.0/src/…	technical-description
https://github.com/oraios/serena	product
https://www.vulncheck.com/advisories/serena-befor…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
oraios	serena	Affected: 0 , < 2.0.0 (semver) cpe:2.3:a:oraios-ai:serena::::::::

Date Public

2026-10-08 00:00

Credits

George Chen

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-109965",
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                    "Automatable": "no"
                  },
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                    "Technical Impact": "total"
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-13T15:29:06.118866Z",
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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.

Vulnerability timeline

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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.
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