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UK Cyber Defence
VulnerabilityModified

CVE-2023-26777

Cross Site Scripting vulnerability found in : louislam Uptime Kuma v.1.19.6 and before allows a remote attacker to execute arbitrary commands via the description, title, footer, and incident creation parameter of the status_page.js endpoint.

MEDIUM 6.1EPSS 0.68%

Does this matter?

Lower severity and a low EPSS score (0.68%). Track it; it rarely justifies an emergency change on its own.

Description

Cross Site Scripting vulnerability found in : louislam Uptime Kuma v.1.19.6 and before allows a remote attacker to execute arbitrary commands via the description, title, footer, and incident creation parameter of the status_page.js endpoint.

CVSS 3.1
6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
0.68% probability · 51th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-79
Affected
uptime kuma project/uptime kuma
Source
cve@mitre.org
EPSS trend
0%3%5%10 October 2026: 0.68%10 October 202610 October 2026

EPSS 0.7% since 10 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.