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CVE-2021-4267

21
FAUCET Score

CVE-2021-4267 describes a cross-site scripting (XSS) vulnerability in the tad_discuss project, specifically within the tad_discuss component. This medium-severity flaw (CVSS 6.1) allows remote attackers to inject malicious scripts by manipulating the DiscussTitle argument, requiring user interaction to trigger. While the vulnerability could lead to limited impact on confidentiality and integrity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding it. A patch (af94d034ff8db642d05fd8788179eab05f433958) is available to remediate this issue.

Impacted Technologies

VendorProductVersion(s)CPE
< 2021-03-23CPE matchmatch criteria
cpe:2.3:a:tad_discuss_project:tad_discuss:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.5LOW

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.1
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.47%
Probability of exploitation in next 30 days
EPSS Percentile
37.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0047 is in the 40th percentile among its peer group of 26,234 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

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / tad0616/tad_discuss/commit/af94d034ff8db642d05fd8788179eab05f433958
PatchThird Party Advisory
github.com / tad0616/tad_discuss/pull/19
PatchThird Party Advisory
vuldb.com
Third Party Advisory