IBM CockroachDB PostgreSQL SSRF in 25.2.0-25.2.20, 25.4.0-25.4.12, 26.2.0-26.2.3
CVE-2026-18546 Published on November 8, 2026
CockroachDB PostgreSQL for IBM VPC is affected by multiple vulnerabilities
IBM CockroachDB PostgreSQL for IBM VPC 26.2.0 through 26.2.3, 25.4.0 through 25.4.12, and 25.2.0 through 25.2.20 is vulnerable to server-side request forgery (SSRF). This may allow an authenticated attacker to send unauthorized requests from the system, potentially leading to network enumeration or facilitating other attacks.
Vulnerability Analysis
CVE-2026-18546 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is a SSRF Vulnerability?
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. By providing URLs to unexpected hosts or ports, attackers can make it appear that the server is sending the request, possibly bypassing access controls such as firewalls that prevent the attackers from accessing the URLs directly. The server can be used as a proxy to conduct port scanning of hosts in internal networks, use other URLs such as that can access documents on the system (using file://), or use other protocols such as gopher:// or tftp://, which may provide greater control over the contents of requests.
CVE-2026-18546 has been classified to as a SSRF vulnerability or weakness.
Products Associated with CVE-2026-18546
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Affected Versions
CockroachDB PostgreSQL for IBM VPC:- Version 26.2.0, <= 26.2.3 is affected.
- Version 25.4.0, <= 25.4.12 is affected.
- Version 25.2.0, <= 25.2.20 is affected.