How many CVEs have patched post_validate_code?

2 published CVEs changed post_validate_code in langflow-ai/langflow, in 3 distinct patches totalling 10 changed lines, between 2025 and 2026.

What is the latest CVE that changed post_validate_code?

CVE-2026-21445 (Langflow Missing Authentication on Critical API Endpoints), published 2026-01-02, changed lines 1 to 14 of src/backend/base/langflow/api/v1/validate.py.

How does post_validate_code compare to the rest of langflow-ai/langflow?

langflow-ai/langflow has 23 CVEs with a located fix in total; 2 of them changed post_validate_code.

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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Post_validate_code

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Patched Functions
Langflow Ai
Langflow
Post_validate_code

post_validate_code in langflow-ai/langflow: Patched by 2 CVEs

langflow-ai/langflow

Function

post_validate_code

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

src/backend/base/langflow/api/v1/validate.py

Last patched January 2, 2026

CVEs

That changed this function

Distinct patches

Backports counted once

Lines changed

Added plus removed

2025–2026

Years

By CVE publication date

Overview

post_validate_code in langflow-ai/langflow was changed by 2 published CVE fixes between 2025 and 2026, in 3 distinct patches that added or removed 10 lines in total.

langflow-ai/langflow has 23 CVEs with a located fix in total, so 9% of them touched this function.

CVEs that patched it

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

Langflow Missing Authentication on Critical API Endpoints
CVE-2026-21445 · lines 1–14 · +4 −4
High · CVSS 8.8
EPSS 33.3%2026-01-02
Langflow < 1.3.0 Unauthenticated RCE via /api/v1/validate/code
CISA KEV
CVE-2025-3248 · line 14 · +1 −1
Critical · CVSS 9.3
EPSS 100.0%2025-04-07

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Other functions in these files

Functions in the same file that CVE fixes also changed.

1post_validate_promptsrc/backend/base/langflow/api/v1/validate.py1 CVEs · 1 patches2026

Other hotspots in the repository

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

download_image3 CVEs · src/backend/base/langflow/api/v1/files.py _resolve_kb_path3 CVEs · src/backend/base/langflow/api/v1/knowledge_bases.py create_knowledge_base3 CVEs · src/backend/base/langflow/api/v1/knowledge_bases.py get_flow_by_id_or_endpoint_name3 CVEs · src/backend/base/langflow/helpers/flow.py get_client_ip2 CVEs · src/backend/base/langflow/api/v1/mcp_projects.py validate_command2 CVEs · src/backend/base/langflow/api/v2/schemas.py

All patched functions in langflow-ai/langflow

Frequently asked questions

Common questions about CVE fixes to post_validate_code.

How many CVEs have patched post_validate_code?: 2 published CVEs changed post_validate_code in langflow-ai/langflow, in 3 distinct patches totalling 10 changed lines, between 2025 and 2026.
What is the latest CVE that changed post_validate_code?: CVE-2026-21445 (Langflow Missing Authentication on Critical API Endpoints), published 2026-01-02, changed lines 1 to 14 of src/backend/base/langflow/api/v1/validate.py.
How does post_validate_code compare to the rest of langflow-ai/langflow?: langflow-ai/langflow has 23 CVEs with a located fix in total; 2 of them changed post_validate_code.
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

src/backend/base/langflow/api/v1/validate.py on GitHub (opens in a new tab)
All patched functions in langflow-ai/langflow
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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References