CVE-2023-49276
Attribute Injection leading to XSS(Cross-Site-Scripting) in uptime-kuma
Uptime Kuma is an open source self-hosted monitoring tool. In affected versions the Google Analytics element in vulnerable to Attribute Injection leading to Cross-Site-Scripting (XSS). Since the custom status interface can set an independent Google Analytics ID and the template has not been sanitized, there is an attribute injection vulnerability here, which can lead to XSS attacks. This vulnerability has been addressed in commit f28dccf4e which is included in release version 1.23.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Attribute Injection leading to XSS(Cross-Site-Scripting) in uptime-kuma
Uptime Kuma is an open source self-hosted monitoring tool. In affected versions the Google Analytics element in vulnerable to Attribute Injection leading to Cross-Site-Scripting (XSS). Since the custom status interface can set an independent Google Analytics ID and the template has not been sanitized, there is an attribute injection vulnerability here, which can lead to XSS attacks. This vulnerability has been addressed in commit f28dccf4e which is included in release version 1.23.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.
- Record
CVE-2023-49276- CVSS 3.1
- 6.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2023-3036
Uptime Kuma is an open source self-hosted monitoring tool. In affected versions the Google Analytics element in vulnerable to Attribute Injection leading to Cross-Site-Scripting (XSS). Since the custom status interface can set an independent Google Analytics ID and the template has not been sanitized, there is an attribute injection vulnerability here, which can lead to XSS attacks. This vulnerability has been addressed in commit f28dccf4e which is included in release version 1.23.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.
- Record
EUVD-2023-3036- CVSS 3.1
- 6.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-v4v2-8h88-65qj
Attribute Injection leading to XSS(Cross-Site-Scripting)
Summary
Google Analytics element Attribute Injection leading to XSS
Details
Since the custom status interface can set an independent Google Analytics ID and the template has not been sanitized, there is an attribute injection vulnerability here, which can lead to XSS attacks.
PoC
- Run the latest version of the louislam/uptime-kuma container and initialize the account password.
- Create a new status page.
- Edit the status page and change the Google Analytics ID to following payload(it only works for firefox. Any attribute can be injected, but this seems the most intuitive):
123123" onafterscriptexecute=alert(window.name+1),eval(window.name) a="x
- Click Save and return to the interface. XSS occurs. screenshots:
- Record
GHSA-v4v2-8h88-65qj- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
Uptime Kuma is an open source self-hosted monitoring tool. In affected versions the Google Analytics element in vulnerable to Attribute Injection leading to Cross-Site-Scripting (XSS). Since the custom status interface can set an independent Google Analytics ID and the template has not been sanitized, there is an attribute injection vulnerability here, which can lead to XSS attacks. This vulnerability has been addressed in commit f28dccf4e which is included in release version 1.23.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.
- Record
CVE-2023-49276- CVSS 3.1
- 6.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:N - CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
Attribute Injection leading to XSS(Cross-Site-Scripting) in uptime-kuma
Uptime Kuma is an open source self-hosted monitoring tool. In affected versions the Google Analytics element in vulnerable to Attribute Injection leading to Cross-Site-Scripting (XSS). Since the custom status interface can set an independent Google Analytics ID and the template has not been sanitized, there is an attribute injection vulnerability here, which can lead to XSS attacks. This vulnerability has been addressed in commit f28dccf4e which is included in release version 1.23.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.
- Record
CVE-2023-49276- CVSS 3.1
- 6.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSVGHSA-v4v2-8h88-65qj
Attribute Injection leading to XSS(Cross-Site-Scripting)
Summary
Google Analytics element Attribute Injection leading to XSS
Details
Since the custom status interface can set an independent Google Analytics ID and the template has not been sanitized, there is an attribute injection vulnerability here, which can lead to XSS attacks.
PoC
- Run the latest version of the louislam/uptime-kuma container and initialize the account password.
- Create a new status page.
- Edit the status page and change the Google Analytics ID to following payload(it only works for firefox. Any attribute can be injected, but this seems the most intuitive):
123123" onafterscriptexecute=alert(window.name+1),eval(window.name) a="x
- Click Save and return to the interface. XSS occurs. screenshots:
- Record
GHSA-v4v2-8h88-65qj- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
uptime-kumanpm |
1.20.0 to 1.23.6 | 1.23.7 |
uptime-kumanpm |
1.20.0 up to 1.23.7 | 1.23.7 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-49276 is a medium vulnerability (CVSS 6.3) in Louislam Uptime-kuma, published November 24, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.50%, the 42nd percentile. Fixed in uptime-kuma 1.23.7.
References
github.com/louislam/uptime-kuma/security/advisories/GHSA-v4v2-8h88-65qj
nvd.nist.gov/vuln/detail/CVE-2023-49276