How many CVEs have patched _is_within_allowed_prefix?

1 published CVEs changed _is_within_allowed_prefix in langchain-ai/langchain, in 1 distinct patches totalling 25 changed lines, between 2026 and 2026.

What is the latest CVE that changed _is_within_allowed_prefix?

CVE-2026-55443 (LangChain: Path traversal and sandbox escape in LangChain file-search middleware and loaders), published 2026-06-22, changed lines 96 to 120 of libs/partners/anthropic/langchain_anthropic/middleware/anthropic_tools.py.

How does _is_within_allowed_prefix compare to the rest of langchain-ai/langchain?

langchain-ai/langchain has 30 CVEs with a located fix in total; 1 of them changed _is_within_allowed_prefix.

What do the line numbers refer to?

Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

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_is_within_allowed_prefix

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Patched Functions
Langchain Ai
Langchain
_is_within_allowed_prefix

_is_within_allowed_prefix in langchain-ai/langchain: Patched by 1 CVEs

langchain-ai/langchain

Function

_is_within_allowed_prefix

Name: _is_within_allowed_prefix in langchain-ai/langchain: CVE fixes
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

libs/partners/anthropic/langchain_anthropic/middleware/anthropic_tools.py

Last patched June 22, 2026

CVEs

That changed this function

Distinct patches

Backports counted once

Lines changed

Added plus removed

2026

Years

By CVE publication date

Overview

_is_within_allowed_prefix in langchain-ai/langchain was changed by 1 published CVE fixes in 2026, in 1 distinct patches that added or removed 25 lines in total.

langchain-ai/langchain has 30 CVEs with a located fix in total, so 3% of them touched this function.

CVEs that patched it

Every published CVE whose fix changed _is_within_allowed_prefix, newest first, with the lines each fix touched.

LangChain: Path traversal and sandbox escape in LangChain file-search middleware and loaders
CVE-2026-55443 · lines 96–120 · +25 −0
Medium · CVSS 5.5
EPSS 0.2%2026-06-22

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Other functions in these files

Functions in the same file that CVE fixes also changed.

1_validate_and_resolve_pathlibs/partners/anthropic/langchain_anthropic/middleware/anthropic_tools.py1 CVEs · 1 patches2026
2_validate_pathlibs/partners/anthropic/langchain_anthropic/middleware/anthropic_tools.py1 CVEs · 1 patches2026

Other hotspots in the repository

Functions in langchain-ai/langchain changed by the most CVE fixes.

validate_code3 CVEs · langchain/chains/pal/base.py from_colored_object_prompt3 CVEs · langchain/chains/pal/base.py run3 CVEs · langchain/utilities/python.py warn_once3 CVEs · langchain/utilities/python.py get_template_variables2 CVEs · libs/core/langchain_core/prompts/string.py __init__2 CVEs · libs/community/langchain_community/retrievers/web_research.py

All patched functions in langchain-ai/langchain

Frequently asked questions

Common questions about CVE fixes to _is_within_allowed_prefix.

How many CVEs have patched _is_within_allowed_prefix?: 1 published CVEs changed _is_within_allowed_prefix in langchain-ai/langchain, in 1 distinct patches totalling 25 changed lines, between 2026 and 2026.
What is the latest CVE that changed _is_within_allowed_prefix?: CVE-2026-55443 (LangChain: Path traversal and sandbox escape in LangChain file-search middleware and loaders), published 2026-06-22, changed lines 96 to 120 of libs/partners/anthropic/langchain_anthropic/middleware/anthropic_tools.py.
How does _is_within_allowed_prefix compare to the rest of langchain-ai/langchain?: langchain-ai/langchain has 30 CVEs with a located fix in total; 1 of them changed _is_within_allowed_prefix.
What do the line numbers refer to?: Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

References

libs/partners/anthropic/langchain_anthropic/middleware/anthropic_tools.py on GitHub (opens in a new tab)
All patched functions in langchain-ai/langchain
Patched functions directory

Fix locations are computed by RadicalNotion.AI from the upstream patch diff of each CVE. CVE data is sourced from the CVE Program.

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