SQL injection in FooSun DotNetCMS lets attackers read database data
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- SQL injection
- Confidentiality · integrity · availability
- High · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-89.
Summary
FooSun DotNetCMS 1.0 and 2.0 contains an SQL injection flaw in the CityId parameter of /user/City_ajax.aspx. The input is concatenated into an MSSQL query without sanitization (CWE-89). An unauthenticated remote attacker can send GET requests to extract database information. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-14, and a public exploit is linked in the references.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
FooSun DotNetCMS 1.0 and 2.0 contains an SQL injection vulnerability that allows unauthenticated attackers to manipulate MSSQL queries through the CityId parameter. Attackers can send GET requests to /user/City_ajax.aspx with UNION SELECT payloads in CityId, concatenated unsanitized into the sys_City query, to extract database information. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-14.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for FooSun DotNetCMS.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Timeline
- 2026-10-20 Threatist record created from CVE-2015-20128
- 2026-10-21 Alias added: GHSA-8cq3-m8mg-6c2h
- 2026-10-22 Priority changed: MEDIUM → LOW
- 2026-10-23 CISA SSVC decision points changed
- 2026-10-23 Priority changed: LOW → HIGH
References
Exploit 1
Sources
- CVE-2015-20128 · CVE Program
- CVE-2015-20128 · NVD
- FIRST EPSS
- GHSA-8cq3-m8mg-6c2h · GitHub Advisory Database · CC BY 4.0
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