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CVE-2020-26158

28
FAUCET Score

CVE-2020-26158 is a critical cross-site scripting (XSS) vulnerability affecting Leanote Desktop through version 2.6.2, stemming from improper handling of note titles during batch operations. This flaw allows for remote code execution due to Node integration. With a CVSS score of 9.6, it represents a critical risk, requiring user interaction (UI:R) but can be exploited remotely (AV:N) with low attack complexity (AC:L), leading to high impacts on confidentiality, integrity, and availability. Despite its severity, there is no evidence of active exploitation, nor are there publicly available exploit modules in common frameworks like Metasploit or Nuclei, and it has garnered minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.2CPE matchmatch criteria
cpe:2.3:a:leanote:leanote:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.6CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.91%
Probability of exploitation in next 30 days
EPSS Percentile
77.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0191 is in the 82nd percentile among its peer group of 834 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.8 Bluesky, 0.5 Mastodon, and 1.2 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

github.com / leanote/desktop-app/issues/353
Third Party Advisory