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CVE-2021-23431

26
FAUCET Score

CVE-2021-23431 is a Cross-Site Request Forgery (CSRF) vulnerability affecting Joplin versions prior to 2.3.2, stemming from missing CSRF checks in various forms. This high-severity vulnerability (CVSS 8.8) can be exploited remotely with low attack complexity, potentially leading to high impacts on confidentiality, integrity, and availability if a user is tricked into clicking a malicious link. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.3.2CPE matchmatch criteria
cpe:2.3:a:joplinapp:joplin:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
32.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 37th 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

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: joplinFixed in: 2.3.2

Vendor Advisories (1)

npmGHSA-gjwp-7v3g-99pjmedium

Cross-site Request Forgery (CSRF) in joplin

Sep 2, 2021

References

github.com / laurent22/joplin/commit/19b45de2981c09f6f387498ef96d32b4811eba5e
PatchThird Party Advisory
snyk.io / vuln/SNYK-JS-JOPLIN-1325537
PatchThird Party Advisory