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CVE-2024-27921

54
FAUCET Score

CVE-2024-27921 is a critical file upload path traversal vulnerability affecting Grav, an open-source flat-file content management system, in versions prior to 1.7.45. This flaw allows authenticated attackers to replace or create arbitrary files, including those with sensitive extensions like .json or .zip, leading to potential arbitrary code injection, data exfiltration via CSS, and integrity compromise of backup files. With a CVSS score of 8.8 (HIGH), it has a low attack complexity and no user interaction required, posing a significant risk of complete compromise of confidentiality, integrity, and availability. Currently, there is no public exploit code available (Metasploit, Nuclei, ExploitDB), it is not listed in the KEV catalog, and there is minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.7.45CPE matchmatch criteria
cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
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
60.59%
Probability of exploitation in next 30 days
EPSS Percentile
99.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.6058 is in the 99th percentile among its peer group of 17,844 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: getgrav/gravFixed in: 1.7.45
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-m7hx-hw6h-mqmchigh

Grav File Upload Path Traversal

Mar 22, 2024

References

github.com / getgrav/grav/commit/5928411b86bab05afca2b33db4e7386a44858e99
Patch
github.com / getgrav/grav/security/advisories/GHSA-m7hx-hw6h-mqmc
ExploitVendor Advisory