SeaCMS: Unauthenticated SQL injection via comment API
Summary
SeaCMS through version 8.7 contains an unauthenticated SQL injection vulnerability in the rlist[] parameter of the comment API (/comment/api/index.php). A remote attacker can send crafted GET requests to manipulate database queries and extract database information through error messages. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-14, and public scanner tooling exists.
Affected
- SeaCMS up to and including 8.7
- Exact fixed version: Unknown.
Fixed in
Unknown. No vendor fix or advisory was found.
Workaround
- No vendor workaround found.
- Restrict or block public access to /comment/api/index.php, or remove the comment module if unused (test first).
- Place the application behind a web application firewall with rules for this path and review logs for requests to it.
Exploitation
- Unauthenticated and remotely exploitable over HTTP GET.
- Exploitation evidence first observed by Shadowserver on 2023-10-14.
- A public nuclei detection template exists.
- VulnCheck KEV status is conflicting across sources and could not be verified.
Our recommendation
- Check all public-facing web assets for any SeaCMS installation, including forgotten or third-party-hosted sites.
- If SeaCMS is found, treat it as urgent: restrict access, isolate the system and plan a migration to a maintained CMS, as no fix is confirmed.
- Review web server logs for requests to /comment/api/index.php with rlist[] parameters.
- Assume exploitation is possible until proven otherwise.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- VulnCheck advisory www.vulncheck.com
- Nuclei detection template github.com
- UEDBox post www.uedbox.com
- SeaCMS vendor site www.seacms.com
- VulDB entry 425258 vuldb.com
- Strix CVE page www.strix.ai
- Exploit-Intel entry exploit-intel.com
- HOL Guard CVE page hol.org
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 31 Oct 2026, 11:01.
Original description (NVD)
SeaCMS through 8.7 contains an unauthenticated SQL injection vulnerability that allows remote attackers to manipulate database queries by injecting SQL through the rlist[] array parameter. Attackers can send GET requests to /comment/api/index.php with crafted rlist[] values using backtick-quoted variables and extractvalue to extract database information via error messages. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-14.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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