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CVE-2023-49805

23
FAUCET Score

CVE-2023-49805 affects Uptime Kuma versions prior to 1.23.9, stemming from insufficient validation of the WebSocket Origin header. This allows cross-site communication with the application, potentially bypassing firewall protections, especially for instances configured in "No-auth" mode. With a CVSS score of 8.8 (High), the vulnerability has a network attack vector and low attack complexity, potentially leading to high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.3.3CPE matchmatch criteria
cpe:2.3:a:dockge.kuma:dockge:*:*:*:*:*:*:*:*
< 1.23.9CPE matchmatch criteria
cpe:2.3:a:uptime.kuma:uptime_kuma:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.0MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
1.2
Impact Score
4.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 18th percentile among its peer group of 17,829 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 (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / louislam/uptime-kuma/commit/2815cc73cfd9d8ced889e00e72899708220d184f
Patch
github.com / louislam/uptime-kuma/security/advisories/GHSA-mj22-23ff-2hrr
ExploitVendor Advisory