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CVE-2020-29553

26
FAUCET Score

CVE-2020-29553 describes a Cross-Site Request Forgery (CSRF) vulnerability in the Scheduler component of Grav CMS through version 1.7.0-rc.17. This flaw allows an attacker to execute arbitrary system commands if an administrator is tricked into visiting a malicious website. With a CVSS score of 8.8 (High), this vulnerability has a high impact on confidentiality, integrity, and availability, requiring user interaction but with low attack complexity. There is currently no public exploit code available, nor is there evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.6.31CPE matchmatch criteria
cpe:2.3:a:getgrav:grav_cms:*:*:*:*:*:*:*:*
1.7.0CPE matchmatch criteria
cpe:2.3:a:getgrav:grav_cms:1.7.0:beta1:*:*:*:*:*:*
1.7.0CPE matchmatch criteria
cpe:2.3:a:getgrav:grav_cms:1.7.0:beta10:*:*:*:*:*:*
1.7.0CPE matchmatch criteria
cpe:2.3:a:getgrav:grav_cms:1.7.0:beta2:*:*:*:*:*:*
1.7.0CPE matchmatch criteria
cpe:2.3:a:getgrav:grav_cms:1.7.0:beta3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.36%
Probability of exploitation in next 30 days
EPSS Percentile
68.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0136 is in the 68th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

composerpatch availablevia ghsa
Product: getgrav/gravFixed in: 1.6.30

Vendor Advisories (1)

composerGHSA-fqff-vcvx-68h3high

Grav CMS Cross-Site Request Forgery (CSRF)

May 24, 2022

References

blog.bssi.fr / cve-2020-29553-cve-2020-29555-cve-2020-29556-multiple-vulnerabilities-within-cms-grav
ExploitThird Party Advisory