CVE-2021-3818

mediumpriority · track · 22EPSS 0.025 · 84 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.45% (84th) EPSS

CVSS 5 · medium

Is it mine?

3 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-28

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

cvss

Technical severity, 0–10. One row per scoring source.

6.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.05mediumAV:N/AC:L/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 1.4

v3.06.3mediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Lsecondary · ENISA EU

v3.06.3mediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Lsecondary · security@huntr.devexploitability 2.8 · impact 3.4

v3.06.3mediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Lsecondary · OSV

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-565USprimaryCWE-565US

affected products (3)

Products and version ranges known to be affected.

getgrav getgrav/gravunspecified → 1.7.22enisa_euvdEU
getgrav grav< 1.7.22nvdUScpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*
Packagist getgrav/grav< 1.7.21osvUSpkg:composer/getgrav/grav

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-cg3q-59w7-rvc2Reliance on Cookies without Validation and Integrity Checking in getgrav/grav2021-09-29ghsa · osvUS
grav is vulnerable to Reliance on Cookies without Validation and Integrity Checking. A cookie with an overly broad path can be accessed through other applications on the same domain. Since cookies often carry sensitive information such as session identifiers, sharing cookies across applications can lead a vulnerability in one application to cause a compromise in another.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2021-09-27modified 2026-06-17

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Related entries.

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+84 more

references (7)

External citations — patches, advisories, analysis.

scry

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