GHSA-fg23-3346-88f5

Suggest an improvement
Source
https://github.com/advisories/GHSA-fg23-3346-88f5
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-fg23-3346-88f5/GHSA-fg23-3346-88f5.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-fg23-3346-88f5
Aliases
  • CVE-2026-50181
Published
2026-07-02T17:38:03Z
Modified
2026-07-02T17:45:33.239761903Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
Langroid: Path traversal in the file tools allows read/write outside configured current directory
Details

Summary

Langroid's ReadFileTool and WriteFileTool appear to treat curr_dir as the intended working-directory boundary for file operations. However, the tools only change the process working directory to curr_dir and then operate on the user-supplied file_path without resolving and enforcing that the final path remains inside curr_dir.

As a result, a tool caller can supply path traversal sequences such as ../secret.txt to read files outside the configured current directory, or ../written_by_tool.txt to write files outside that directory.

This can impact applications that expose Langroid file tools to an LLM agent, user-controlled tool call, or delegated coding/documentation agent while relying on curr_dir to restrict file access to a project/workspace directory.

Details

Affected components:

  • langroid/agent/tools/file_tools.py
  • langroid/utils/system.py

Relevant behavior observed:

ReadFileTool contains a comment indicating the intended assumption:

```text

ASSUME: filepath should be relative to the currdir

The tool then changes into the configured current directory and calls readfile(self.filepath).

WriteFileTool similarly resolves currdir, changes into that directory, and calls createfile(self.file_path, self.content).

The issue is that changing the process working directory does not prevent traversal. A path such as ../secret.txt is still valid and resolves outside the configured curr_dir.

In local testing, ReadFileTool successfully read a file outside the configured sandbox directory, and WriteFileTool successfully wrote a file outside the configured sandbox directory.

PoC

Tested locally against the current Langroid repository checkout.

Environment:

Python 3.12 Langroid installed in editable mode with pip install -e .

PoC script:

from pathlib import Path from tempfile import TemporaryDirectory import os

os.environ["docker"] = "false" os.environ["DOCKER"] = "false"

from langroid.agent.tools.file_tools import ReadFileTool, WriteFileTool

class DummyIndex: def add(self, files): print("dummy git add:", files)

def commit(self, message):
    print("dummy git commit:", message)

class DummyRepo: index = DummyIndex()

with TemporaryDirectory() as root: base = Path(root) sandbox = base / "sandbox" sandbox.mkdir()

secret = base / "secret.txt"
secret.write_text("LANGROID_TOOL_ESCAPE_PROOF", encoding="utf-8")

ReadSandbox = ReadFileTool.create(get_curr_dir=lambda: sandbox)
read_tool = ReadSandbox(file_path="../secret.txt")

print("READ TOOL RESULT:")
print(read_tool.handle())

WriteSandbox = WriteFileTool.create(
    get_curr_dir=lambda: sandbox,
    get_git_repo=lambda: DummyRepo(),
)

write_tool = WriteSandbox(
    file_path="../written_by_tool.txt",
    content="WRITTEN_BY_LANGROID_TOOL",
    language="text",
)

print("WRITE TOOL RESULT:")
print(write_tool.handle())

outside = base / "written_by_tool.txt"
print("outside exists:", outside.exists())
print("outside content:", outside.read_text(encoding="utf-8"))

Observed output:

READ TOOL RESULT:

CONTENTS of ../secret.txt:
(Line numbers added for reference only!)
---------------------------
1: LANGROID_TOOL_ESCAPE_PROOF

WRITE TOOL RESULT: Content created/updated in: ..\writtenbytool.txt dummy git add: ['../writtenbytool.txt'] dummy git commit: Agent write file tool Content written to ../writtenbytool.txt and committed outside exists: True outside content: WRITTENBYLANGROID_TOOL

This demonstrates that both read and write operations can escape the configured curr_dir using ../ traversal.

Impact

If an application enables Langroid's file tools and treats curr_dir as a project, workspace, repository, or sandbox boundary, a tool caller can escape that boundary.

Potential impact includes:

Reading files outside the intended workspace. Writing files outside the intended workspace. Exposing local secrets, configuration files, source files, environment files, or other project-adjacent files. Modifying files outside the intended project directory if WriteFileTool is enabled.

This is especially relevant in agentic workflows where an LLM or external user can influence tool arguments.

This report does not claim unauthenticated remote exploitation by default. The impact depends on how an application exposes Langroid file tools and whether curr_dir is intended to restrict file access.

Suggested remediation

Before reading, writing, or listing files, resolve the configured base directory and the requested target path, then reject any path that escapes the base directory.

Example patch pattern:

from pathlib import Path

def safejoin(basedir: str | Path, userpath: str | Path) -> Path: base = Path(basedir).resolve() target = (base / user_path).resolve()

if target != base and base not in target.parents:
    raise ValueError("Path escapes configured current directory")

return target

Then use the resolved safe path for ReadFileTool, WriteFileTool, and ListDirTool.

Suggested regression tests:

ReadFileTool(filepath="../secret.txt") should be rejected. WriteFileTool(filepath="../outside.txt") should be rejected. Absolute paths outside currdir should be rejected. Symlink-based escapes should be rejected after final path resolution. Normal relative paths inside currdir, such as src/main.py, should continue to work.

Langroid CVE Report.pdf

Database specific 
{
    "github_reviewed_at": "2026-07-02T17:38:03Z",
    "nvd_published_at": null,
    "github_reviewed": true,
    "cwe_ids": [
        "CWE-22",
        "CWE-23"
    ],
    "severity": "HIGH"
}
References

Affected packages

PyPI / langroid

Package

Name
langroid
View open source insights on deps.dev
Purl
pkg:pypi/langroid

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.64.0

Affected versions

0.*
0.1.8
0.1.9
0.1.11
0.1.12
0.1.13
0.1.15
0.1.17
0.1.18
0.1.19
0.1.20
0.1.21
0.1.22
0.1.23
0.1.24
0.1.25
0.1.26
0.1.27
0.1.28
0.1.29
0.1.30
0.1.31
0.1.32
0.1.33
0.1.34
0.1.35
0.1.36
0.1.37
0.1.38
0.1.39
0.1.40
0.1.41
0.1.42
0.1.43
0.1.44
0.1.46
0.1.47
0.1.48
0.1.49
0.1.50
0.1.51
0.1.52
0.1.53
0.1.54
0.1.55
0.1.56
0.1.57
0.1.58
0.1.59
0.1.60
0.1.61
0.1.62
0.1.63
0.1.64
0.1.65
0.1.66
0.1.67
0.1.68
0.1.69
0.1.72
0.1.73
0.1.76
0.1.77
0.1.78
0.1.79
0.1.80
0.1.81
0.1.83
0.1.84
0.1.85
0.1.86
0.1.87
0.1.88
0.1.89
0.1.90
0.1.91
0.1.92
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0.1.256
0.1.257
0.1.258
0.1.260
0.1.261
0.1.262
0.1.263
0.1.265
0.2.0
0.2.2
0.2.3
0.2.4
0.2.5
0.2.6
0.2.7
0.2.9
0.2.10
0.2.11
0.2.12
0.3.0
0.3.1
0.5.0
0.5.1
0.6.0
0.6.1
0.6.3
0.6.4
0.6.5
0.6.6
0.6.7
0.8.0
0.9.0
0.9.1
0.9.2
0.9.3
0.9.4
0.9.5
0.10.0
0.10.1
0.10.2
0.11.0
0.12.0
0.13.0
0.14.0
0.15.0
0.15.1
0.15.2
0.16.0
0.16.1
0.16.2
0.16.3
0.16.4
0.16.5
0.16.6
0.16.7
0.17.0
0.17.1
0.18.0
0.18.1
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0.18.3
0.19.0
0.19.1
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0.19.5
0.20.0
0.20.1
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0.22.1
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0.23.1
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0.26.1
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0.28.1
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0.30.1
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0.31.3
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0.32.1
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0.34.1
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0.35.1
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0.36.1
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0.37.1
0.37.2
0.37.3
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0.37.6
0.37.7
0.38.0
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0.39.1
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0.39.3
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0.39.5
0.40.0
0.41.0
0.41.1
0.41.2
0.41.3
0.41.4
0.41.5
0.42.0
0.42.1
0.42.2
0.42.3
0.42.4
0.42.5
0.42.6
0.42.7
0.42.8
0.42.9
0.42.10
0.43.0
0.43.1
0.44.0
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0.45.1
0.45.2
0.45.3
0.45.4
0.45.5
0.45.6
0.45.7
0.45.8
0.45.10
0.46.0
0.47.0
0.47.1
0.47.2
0.48.0
0.48.1
0.48.2
0.48.3
0.49.0
0.49.1
0.50.0
0.50.1
0.50.2
0.50.3
0.50.4
0.50.5
0.50.6
0.50.7
0.50.8
0.50.9
0.50.10
0.50.11
0.50.12
0.51.0
0.51.1
0.51.2
0.52.0
0.52.1
0.52.2
0.52.3
0.52.4
0.52.5
0.52.6
0.52.7
0.52.8
0.52.9
0.53.0
0.53.1
0.53.2
0.53.4
0.53.5
0.53.6
0.53.7
0.53.8
0.53.10
0.53.11
0.53.12
0.53.13
0.53.14
0.53.15
0.53.16
0.54.0
0.54.1
0.54.2
0.55.0
0.55.1
0.56.0
0.56.1
0.56.2
0.56.3
0.56.4
0.56.5
0.56.6
0.56.7
0.56.8
0.56.9
0.56.10
0.56.11
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0.56.13
0.56.14
0.56.15
0.56.16
0.56.17
0.56.18
0.56.19
0.57.0
0.58.0
0.58.1
0.58.2
0.58.3
0.59.0b1
0.59.0b2
0.59.0b3
0.59.0
0.59.1
0.59.2
0.59.3
0.59.4
0.59.5
0.59.6
0.59.7
0.59.8
0.59.9
0.59.10
0.59.11
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0.59.13
0.59.14
0.59.15
0.59.16
0.59.17
0.59.18
0.59.19
0.59.20
0.59.21
0.59.22
0.59.23
0.59.24
0.59.25
0.59.26
0.59.27
0.59.28
0.59.29
0.59.30
0.59.31
0.59.32
0.59.33
0.59.34
0.59.35
0.59.36
0.59.37
0.59.38
0.59.39
0.60.0
0.60.1
0.60.2
0.60.3
0.61.0
0.61.1
0.62.0
0.63.0

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-fg23-3346-88f5/GHSA-fg23-3346-88f5.json"
last_known_affected_version_range 
"<= 0.63.0"