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CVE-2022-31521

30
FAUCET Score

CVE-2022-31521 is a critical absolute path traversal vulnerability affecting the Niyaz-Mohamed/mosaic repository through version 1.0.0 on GitHub. It stems from the unsafe use of Flask's send_file function, allowing attackers to access arbitrary files on the server. With a CVSS score of 9.3, this vulnerability is easily exploitable over the network with no user interaction, potentially leading to high confidentiality impact and low availability impact. While there is no evidence of active exploitation, public exploit code, or KEV listing, the vulnerability has garnered significant community discussion, indicating awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.0CPE matchmatch criteria
cpe:2.3:a:mosaic_project:mosaic:1.0.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.3CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
4.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.24%
Probability of exploitation in next 30 days
EPSS Percentile
66.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0124 is in the 52nd percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 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 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / github/securitylab/issues/669
ExploitIssue TrackingThird Party Advisory