[Snyk] Security upgrade protobuf from 4.24.4 to 6.33.5

[pratham-aggr]

Snyk has created this PR to fix 1 vulnerabilities in the pip dependencies of this project.

Snyk changed the following file(s):

• backend-api/requirements.txt

⚠️ Warning

yfinance 0.2.65 requires protobuf, which is not installed.
yfinance 0.2.65 requires curl-cffi, which is not installed.
yfinance 0.2.65 requires websockets, which is not installed.

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Note

Low Risk
Single dependency constraint change; low risk aside from potential upstream incompatibility with packages that expect older protobuf versions.

Overview
Pins protobuf to >=6.33.5 in backend-api/requirements.txt to address a Snyk-reported vulnerability (even though it’s an indirect dependency, e.g., via yfinance).

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Project	Deployment	Actions	Updated (UTC)
quantflow	Error		Jan 31, 2026 7:08am

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Major protobuf version upgrade may break yfinance compatibility

Medium Severity

The upgrade from protobuf 4.24.4 to 6.33.5 represents a 2-major-version jump that may introduce compatibility issues with yfinance==0.2.65, which depends on protobuf. The Snyk warning in the PR description indicates potential dependency concerns. This codebase heavily uses yfinance for market data fetching. If yfinance has an upper-bound version constraint on protobuf (e.g., <5.0), this change could cause dependency resolution failures or runtime errors. This compatibility should be verified before merging.