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CVE-2021-4293

21
FAUCET Score

CVE-2021-4293 is a Cross-Site Scripting (XSS) vulnerability affecting gnuboard youngcart5 versions up to 5.4.5.1, specifically within the adm/menu_list_update.php file via the 'me_link' argument. This vulnerability has a CVSS v3.1 score of 6.1 (Medium), indicating it can be exploited remotely with low attack complexity, requiring user interaction, and potentially leading to low impact on confidentiality and integrity. While a patch (version 5.4.5.2) is available, this vulnerability affects unsupported products, and there is no known active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.4.5.2CPE matchmatch criteria
cpe:2.3:a:sir:youngcart5:*:*:*:*:*:*:*:*

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
0.51%
Probability of exploitation in next 30 days
EPSS Percentile
40.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0050 is in the 42nd percentile among its peer group of 26,236 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 / gnuboard/youngcart5/commit/70daa537adfa47b87af12d85f1e698fff01785ff
PatchThird Party Advisory
github.com / gnuboard/youngcart5/releases/tag/5.4.5.2
Third Party Advisory
vuldb.com
Third Party Advisory
vuldb.com
Third Party Advisory