PYSEC-2026-2192

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Import Source
https://github.com/pypa/advisory-database/blob/main/vulns/langchain/PYSEC-2026-2192.yaml
JSON Data
https://api.osv.dev/v1/vulns/PYSEC-2026-2192
Aliases
Published
2026-06-22T19:17:21.537Z
Modified
2026-07-13T16:43:09.845932020Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

LangChain is a framework for building agents and LLM-powered applications. Prior to 1.3.9, several LangChain components that resolve filesystem paths or expand search patterns do not consistently confine the resolved path to the intended root directory. Affected behaviors include: a file-search agent middleware that validates a starting directory but not the search pattern or the resolved target of matched files, so glob patterns and symlinks can reach files outside the configured root; prompt- and chain/agent-configuration loaders that accept path fields and resolve them without confining the result to a trusted base or rejecting symlink targets; and path-prefix authorization checks that compare by string prefix without a path-segment boundary, so a sibling path sharing the prefix is accepted. When these components receive path values, search patterns, or workspace contents influenced by an untrusted source — including an LLM acting on untrusted input — the result can be disclosure of files outside the intended boundary. This vulnerability is fixed in 1.3.9.

References

Affected packages

PyPI / langchain

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.3.9

Affected versions

0.*
0.0.1
0.0.2
0.0.3
0.0.4
0.0.5
0.0.6
0.0.7
0.0.8
0.0.9
0.0.10
0.0.11
0.0.12
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0.0.14
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0.0.27
0.0.28
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0.0.41
0.0.42
0.0.43
0.0.44
0.0.45
0.0.46
0.0.47
0.0.48
0.0.49
0.0.50
0.0.51
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0.0.53
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0.0.55
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0.0.61
0.0.63
0.0.64
0.0.65
0.0.66
0.0.67
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0.0.69
0.0.70
0.0.71
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0.0.79
0.0.80
0.0.81
0.0.82
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0.0.84
0.0.85
0.0.86
0.0.87
0.0.88
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0.0.91
0.0.92
0.0.93
0.0.94
0.0.95
0.0.96
0.0.97
0.0.98
0.0.99rc0
0.0.99
0.0.100
0.0.101rc0
0.0.101
0.0.102rc0
0.0.102
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0.0.240rc0
0.0.240rc1
0.0.240rc4
0.0.240
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0.0.331rc0
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0.0.331
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0.0.339rc0
0.0.339rc1
0.0.339rc2
0.0.339rc3
0.0.339
0.0.340
0.0.341
0.0.342
0.0.343
0.0.344
0.0.345
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0.0.349rc1
0.0.349rc2
0.0.349
0.0.350
0.0.351
0.0.352
0.0.353
0.0.354
0.1.0
0.1.1
0.1.2
0.1.3
0.1.4
0.1.5
0.1.6
0.1.7
0.1.8
0.1.9
0.1.10
0.1.11
0.1.12
0.1.13
0.1.14
0.1.15
0.1.16
0.1.17rc1
0.1.17
0.1.19
0.1.20
0.2.0rc1
0.2.0rc2
0.2.0
0.2.1
0.2.2
0.2.3
0.2.4
0.2.5
0.2.6
0.2.7
0.2.8
0.2.9
0.2.10
0.2.11
0.2.12
0.2.13
0.2.14
0.2.15
0.2.16
0.2.17
0.3.0.dev1
0.3.0.dev2
0.3.0
0.3.1
0.3.2
0.3.3
0.3.4
0.3.5
0.3.6
0.3.7
0.3.8
0.3.9
0.3.10
0.3.11
0.3.12
0.3.13
0.3.14
0.3.15
0.3.16
0.3.17
0.3.18rc1
0.3.18rc2
0.3.18
0.3.19
0.3.20
0.3.21
0.3.22
0.3.23
0.3.24
0.3.25
0.3.26
0.3.27
0.3.28
0.3.29
0.3.30
0.4.0.dev0
1.*
1.0.0a1
1.0.0a2
1.0.0a3
1.0.0a4
1.0.0a5
1.0.0a6
1.0.0a7
1.0.0a8
1.0.0a9
1.0.0a10
1.0.0a11
1.0.0a12
1.0.0a13
1.0.0a14
1.0.0a15
1.0.0rc1
1.0.0rc2
1.0.0
1.0.1
1.0.2
1.0.3
1.0.4
1.0.5
1.0.6
1.0.7
1.0.8
1.1.0
1.1.1
1.1.2
1.1.3
1.2.0
1.2.1
1.2.2
1.2.3
1.2.4
1.2.5
1.2.6
1.2.7
1.2.8
1.2.9
1.2.10
1.2.11
1.2.12
1.2.13
1.2.14
1.2.15
1.2.16
1.2.17
1.2.18
1.3.0a1
1.3.0a2
1.3.0
1.3.1
1.3.2
1.3.3
1.3.4
1.3.5
1.3.6
1.3.7
1.3.8

Database specific

source 
"https://github.com/pypa/advisory-database/blob/main/vulns/langchain/PYSEC-2026-2192.yaml"