CVE-2020-21246
YiiCMS Cross Site Scripting vulnerability
Cross Site Scripting vulnerability in YiiCMS v.1.0 allows a remote attacker to execute arbitrary code via the news function.
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
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Cross Site Scripting vulnerability in YiiCMS v.1.0 allows a remote attacker to execute arbitrary code via the news function.
- Record
CVE-2020-21246- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List
Cross Site Scripting vulnerability in YiiCMS v.1.0 allows a remote attacker to execute arbitrary code via the news function.
- Record
CVE-2020-21246- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2023-1808
Cross Site Scripting vulnerability in YiiCMS v.1.0 allows a remote attacker to execute arbitrary code via the news function.
- Record
EUVD-2023-1808- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-gqr4-cvf4-3957
YiiCMS Cross Site Scripting vulnerability
Cross Site Scripting vulnerability in YiiCMS v.1.2.0 and prior allows a remote attacker to execute arbitrary code via the news function.
- Record
GHSA-gqr4-cvf4-3957- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
Cross Site Scripting vulnerability in YiiCMS v.1.0 allows a remote attacker to execute arbitrary code via the news function.
- Record
CVE-2020-21246- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
OSVGHSA-gqr4-cvf4-3957
YiiCMS Cross Site Scripting vulnerability
Cross Site Scripting vulnerability in YiiCMS v.1.2.0 and prior allows a remote attacker to execute arbitrary code via the news function.
- Record
GHSA-gqr4-cvf4-3957- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
sheng/yiicmsPackagist |
before 1.2.1 | 1.2.1 |
sheng/yiicmsPackagist |
before 1.2.1, plus listed versions 1.01.11.1.11.1.101.1.11 Show 16 moreShow less1.1.121.1.131.1.141.1.151.1.161.1.171.1.181.1.21.1.31.1.41.1.51.1.61.1.71.1.81.1.9v1.2.0 |
1.2.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| 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-2020-21246 is a medium vulnerability (CVSS 5.4) in Yiicms Project Yiicms, published June 20, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.55%, the 46th percentile. Fixed in sheng/yiicms 1.2.1.