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

medium Affects getgrav/grav. Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

Reliance on Cookies without Validation and Integrity Checking in getgrav/grav

Package
getgrav/grav Composer
Affected versions
<1.7.21
Fixed in
1.7.21
Severity
medium  CVSS 6.3
Exploitation
not on CISA KEV · EPSS 2% (84.3th percentile)
Published
2021-09-29
Source
osv.dev

References

CWE-565
NVD recordgetgrav/grav advisories

Am I affected?

Find out in one command. phpwarden checks your composer.lock against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# one-time install
pip install phpwarden

# then
phpwarden deps composer.lock

Or keep it checked automatically: GitHub Action · pre-commit hook · GitLab CI · Laravel artisan command

Install docs   How findings are ranked

Related advisories