CVE-2026-25580
Description
A flaw was found in Pydantic AI. This Server-Side Request Forgery (SSRF) vulnerability allows a remote attacker to include malicious URLs within untrusted message history. When processed by the application, these URLs can force the server to make unauthorized HTTP requests to internal network resources. This could lead to the disclosure of sensitive internal information or access to cloud credentials.
Statement
This IMPORTANT vulnerability affects Red Hat Enterprise Linux AI products using Pydantic AI when applications process untrusted message history. A Server-Side Request Forgery (SSRF) flaw in URL download handling allows attackers to inject malicious URLs, potentially accessing internal network resources or cloud credentials. Exploitation requires applications to accept message history from external, untrusted sources.
Mitigation
To mitigate, configure applications using Pydantic AI to avoid accepting message history from untrusted external sources. Implement robust input validation and sanitization for all URLs processed by the application. Additionally, restrict network access for the Pydantic AI application to only essential internal and external resources, thereby limiting the potential impact of SSRF attacks.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 8.6 | N/A | 8.6 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | None | N/A | None |
| Scope | Changed | N/A | Changed |
| Confidentiality | High | N/A | High |
| Integrity Impact | None | N/A | None |
| Availability Impact | None | N/A | None |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Application Data
Integrity
Technical Impact: Execute Unauthorized Code or Commands
Access Control
Technical Impact: Bypass Protection Mechanism
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.
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