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CVE-2021-31631

27
FAUCET Score

CVE-2021-31631 is a high-severity Cross-Site Request Forgery (CSRF) vulnerability affecting b2evolution CMS version 7.2.3. This flaw allows an attacker to escalate privileges by tricking an authenticated user into performing an unintended action via the login page. With a CVSS score of 8.8, this vulnerability presents a significant risk due to its low attack complexity and high impact on confidentiality, integrity, and availability. Despite its severity, there is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
7.2.3CPE matchmatch criteria
cpe:2.3:a:b2evolution:b2evolution_cms:7.2.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.54%
Probability of exploitation in next 30 days
EPSS Percentile
42.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0054 is in the 44th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 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 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

gist.github.com / stacksmasher007/76514ab2b782fb4383f1121e6fc19241
ExploitThird Party Advisory