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CVE-2021-29400

21
FAUCET Score

CVE-2021-29400 is a Cross-Site Request Forgery (CSRF) vulnerability affecting the My SMTP Contact v1.1.1 plugin for GetSimple CMS. This allows an attacker to modify the SMTP settings of contact forms if an authenticated administrator visits a malicious third-party site. Rated MEDIUM severity (CVSS 6.5), it has a network attack vector and low attack complexity, potentially leading to high integrity impact without affecting confidentiality or availability. There is no evidence of active exploitation, public exploit code, or significant community discussion, suggesting a low current threat landscape.

Impacted Technologies

VendorProductVersion(s)CPE
1.1.1CPE matchmatch criteria
cpe:2.3:a:netexplorer:my_smtp_contact:1.1.1:*:*:*:*:getsimple:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.56%
Probability of exploitation in next 30 days
EPSS Percentile
43.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0056 is in the 46th 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

Remediation records are not available for this CVE.

References

get-simple.info / extend/plugin/my-smtp-contact/1221
ExploitThird Party Advisory