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CVE-2023-36821

26
FAUCET Score

CVE-2023-36821 is a critical vulnerability affecting Uptime Kuma versions prior to 1.22.1, allowing an authenticated attacker to achieve remote code execution by installing a maliciously crafted plugin. This vulnerability has a high CVSS score of 8.8, indicating a severe impact with high confidentiality, integrity, and availability risks, and can be exploited with low attack complexity by an authenticated user over the network. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.22.1CPE matchmatch criteria
cpe:2.3:a:uptime-kuma_project:uptime-kuma:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
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
2.02%
Probability of exploitation in next 30 days
EPSS Percentile
78.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0202 is in the 77th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: uptime-kumaFixed in: 1.22.1

Vendor Advisories (1)

npmGHSA-7grx-f945-mj96high

Uptime Kuma vulnerable to authenticated remote code execution via malicious plugin installation

May 1, 2024

References

github.com / louislam/uptime-kuma/blob/8c60e902e1c76ecbbd1b0423b07ce615341cb850/server/plugins-manager.js
Product
github.com / louislam/uptime-kuma/pull/3346
Patch
github.com / louislam/uptime-kuma/releases/tag/1.22.1
Release Notes
github.com / louislam/uptime-kuma/security/advisories/GHSA-7grx-f945-mj96
ExploitVendor Advisory