How many CVEs have patched get_num_tokens_from_messages?

1 published CVEs changed get_num_tokens_from_messages in langchain-ai/langchain, in 1 distinct patches totalling 7 changed lines, between 2026 and 2026.

What is the latest CVE that changed get_num_tokens_from_messages?

CVE-2026-26013 (LangChain affected by SSRF via image_url token counting in ChatOpenAI.get_num_tokens_from_messages), published 2026-02-10, changed lines 1771 to 1839 of libs/partners/openai/langchain_openai/chat_models/base.py.

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

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

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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Get_num_tokens_from_messages

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Patched Functions
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Get_num_tokens_from_messages

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

langchain-ai/langchain

Function

get_num_tokens_from_messages

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

libs/partners/openai/langchain_openai/chat_models/base.py

Last patched February 10, 2026

CVEs

That changed this function

Distinct patches

Backports counted once

Lines changed

Added plus removed

2026

Years

By CVE publication date

Overview

get_num_tokens_from_messages in langchain-ai/langchain was changed by 1 published CVE fixes in 2026, in 1 distinct patches that added or removed 7 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 get_num_tokens_from_messages, newest first, with the lines each fix touched.

LangChain affected by SSRF via image_url token counting in ChatOpenAI.get_num_tokens_from_messages
CVE-2026-26013 · lines 1771–1839 · +6 −1 in 3 hunks
Low · CVSS 3.7
EPSS 0.5%2026-02-10

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Other functions in these files

Functions in the same file that CVE fixes also changed.

1_url_to_sizelibs/partners/openai/langchain_openai/chat_models/base.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 get_num_tokens_from_messages.

How many CVEs have patched get_num_tokens_from_messages?: 1 published CVEs changed get_num_tokens_from_messages in langchain-ai/langchain, in 1 distinct patches totalling 7 changed lines, between 2026 and 2026.
What is the latest CVE that changed get_num_tokens_from_messages?: CVE-2026-26013 (LangChain affected by SSRF via image_url token counting in ChatOpenAI.get_num_tokens_from_messages), published 2026-02-10, changed lines 1771 to 1839 of libs/partners/openai/langchain_openai/chat_models/base.py.
How does get_num_tokens_from_messages compare to the rest of langchain-ai/langchain?: langchain-ai/langchain has 30 CVEs with a located fix in total; 1 of them changed get_num_tokens_from_messages.
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/openai/langchain_openai/chat_models/base.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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