CVE-2020-15276
Cross Site Scripting in baserCMS
CVE-2020-15276 is a high vulnerability (CVSS 7.7) in Basercms, published October 30, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.00%, the 62nd percentile. Fixed in baserproject/basercms 4.4.1.
baserCMS before version 4.4.1 is vulnerable to Cross-Site Scripting. Arbitrary JavaScript may be executed by entering a crafted nickname in blog comments. The issue affects the blog comment component. It is fixed in version 4.4.1.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Cross Site Scripting in baserCMS
baserCMS before version 4.4.1 is vulnerable to Cross-Site Scripting. Arbitrary JavaScript may be executed by entering a crafted nickname in blog comments. The issue affects the blog comment component. It is fixed in version 4.4.1.
- Record
CVE-2020-15276- CVSS 3.1
- 7.7 High
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2020-1429
baserCMS before version 4.4.1 is vulnerable to Cross-Site Scripting. Arbitrary JavaScript may be executed by entering a crafted nickname in blog comments. The issue affects the blog comment component. It is fixed in version 4.4.1.
- Record
EUVD-2020-1429- CVSS 3.1
- 7.7 High
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-fw5q-j9p4-3vxg
Blog comment posting, Cross Site Scripting(XSS) Vulnerability in Latest Release 4.4.0
baserCMS 4.4.0 and earlier is affected by Cross Site Scripting (XSS).
Impact: XSS via Arbitrary script execution. Components are: Blog comment posting Tested baserCMS Version : 4.4.0 (Latest) Affected baserCMS Version : 4.0.0 ~ 4.4.0 Patches : https://basercms.net/security/20201029 Found by yama
- Record
GHSA-fw5q-j9p4-3vxg- CVSS 3.1
- 7.7 High
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
baserCMS before version 4.4.1 is vulnerable to Cross-Site Scripting. Arbitrary JavaScript may be executed by entering a crafted nickname in blog comments. The issue affects the blog comment component. It is fixed in version 4.4.1.
- Record
CVE-2020-15276- CVSS 3.1
- 7.7 High
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N - CVSS 3.1
- 8.7 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
baserCMS before version 4.4.1 is vulnerable to Cross-Site Scripting. Arbitrary JavaScript may be executed by entering a crafted nickname in blog comments. The issue affects the blog comment component. It is fixed in version 4.4.1.
- Record
CVE-2020-15276- CVSS 3.1
- 8.7 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N - Updated
- 2026-11-02
OSVGHSA-fw5q-j9p4-3vxg
Blog comment posting, Cross Site Scripting(XSS) Vulnerability in Latest Release 4.4.0
baserCMS 4.4.0 and earlier is affected by Cross Site Scripting (XSS).
Impact: XSS via Arbitrary script execution. Components are: Blog comment posting Tested baserCMS Version : 4.4.0 (Latest) Affected baserCMS Version : 4.0.0 ~ 4.4.0 Patches : https://basercms.net/security/20201029 Found by yama
- Record
GHSA-fw5q-j9p4-3vxg- CVSS 3.1
- 7.7 High
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
baserproject/basercmsPackagist |
4.4.0 up to 4.4.1 | 4.4.1 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV |