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CVE-2021-41467

29
FAUCET Score

CVE-2021-41467 is a medium-severity cross-site scripting (XSS) vulnerability affecting JustWriting 1.0.0 and earlier, allowing remote attackers to inject malicious web scripts via the 'challenge' parameter in application/controllers/dropbox.php. This vulnerability has a CVSS score of 6.1, indicating a low attack complexity and requiring user interaction, with potential impacts on confidentiality and integrity. While no active exploitation or public Metasploit/ExploitDB code is reported, a Nuclei template exists, and there is minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.0CPE matchmatch criteria
cpe:2.3:a:justwriting_project:justwriting:1.0.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.60%
Probability of exploitation in next 30 days
EPSS Percentile
88.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2021-41467 · Oct 6, 2021
This CVE's current EPSS score of 0.0360 is in the 95th percentile among its peer group of 26,221 CVEs.

Social Chatter

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

Vendor Advisories (1)

composerGHSA-gxmc-5wj3-jx64medium

Cross-site scripting in application/controllers/dropbox.php in JustWriting

Oct 4, 2021

References

github.com / hjue/JustWriting
Third Party Advisory
github.com / hjue/JustWriting/issues/106
Issue TrackingThird Party Advisory