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CVE-2023-49276

18
FAUCET Score

CVE-2023-49276 is a Cross-Site Scripting (XSS) vulnerability affecting Uptime Kuma, an open-source self-hosted monitoring tool. This flaw arises from an attribute injection vulnerability within the Google Analytics element of the custom status interface, where unsanitized templates allow for malicious script execution. The vulnerability has a CVSS score of 6.1 (Medium), indicating it can be exploited remotely with low attack complexity, requiring user interaction, and potentially leading to low confidentiality and integrity impacts. There is currently no evidence of active exploitation, nor are there publicly available exploit modules or significant community discussion surrounding this CVE. Users are advised to upgrade to Uptime Kuma version 1.23.7 or later to remediate this issue.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.20.0, < 1.23.7CPE matchmatch criteria
cpe:2.3:a:uptime.kuma:uptime_kuma:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.1
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.50%
Probability of exploitation in next 30 days
EPSS Percentile
39.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0050 is in the 42nd 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

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: uptime-kumaFixed in: 1.23.7

Vendor Advisories (1)

npmGHSA-v4v2-8h88-65qjmedium

Attribute Injection leading to XSS(Cross-Site-Scripting)

Nov 24, 2023

References

github.com / louislam/uptime-kuma/commit/f28dccf4e11f041564293e4f407e69ab9ee2277f
Patch
github.com / louislam/uptime-kuma/security/advisories/GHSA-v4v2-8h88-65qj
ExploitVendor Advisory