CVE-2025-66450 Vulnerability Analysis & Exploit Details

CVE-2025-66450
Vulnerability Scoring

5.4
/10
Significant Risk

Security assessments indicate that CVE-2025-66450 presents a notable risk, potentially requiring prompt mitigation.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Network
    Vulnerability is exploitable over a network without physical access.
  • Privileges Required: Low
    Some privileges are necessary to exploit the vulnerability.
  • Scope: Changed
    Successful exploitation can impact components beyond the vulnerable component.
  • User Interaction: Required
    User interaction is necessary for successful exploitation.

CVE-2025-66450 Details

Status: Analyzed

Last updated: 🕠 15 Dec 2025, 17:57 UTC
Originally published on: 🕙 11 Dec 2025, 22:15 UTC

Time between publication and last update: 3 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVE-2025-66450 Vulnerability Summary

CVE-2025-66450: LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, when a user posts a question, the iconURL parameter of the POST request can be modified by an attacker. The malicious code is then stored in the chat which can then be shared to other users. When sharing chats with a potentially malicious “tracker”, resources loaded can lead to loss of privacy for users who view the chat link that is sent to them. This issue is fixed in version 0.8.1.

Assessing the Risk of CVE-2025-66450

Access Complexity Graph

The exploitability of CVE-2025-66450 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2025-66450

CVE-2025-66450 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2025-66450, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2025-66450, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: Low
    CVE-2025-66450 could lead to minor leaks of non-critical information without major privacy breaches.
  • Integrity: Low
    Exploiting CVE-2025-66450 may cause minor changes to data without severely impacting its accuracy.
  • Availability: None
    CVE-2025-66450 does not impact system availability.

CVE-2025-66450 References

External References

CWE Common Weakness Enumeration

CWE-80

CAPEC Common Attack Pattern Enumeration and Classification

  • XSS Targeting Non-Script Elements CAPEC-18 This attack is a form of Cross-Site Scripting (XSS) where malicious scripts are embedded in elements that are not expected to host scripts such as image tags (<img>), comments in XML documents (< !-CDATA->), etc. These tags may not be subject to the same input validation, output validation, and other content filtering and checking routines, so this can create an opportunity for an adversary to tunnel through the application's elements and launch a XSS attack through other elements. As with all remote attacks, it is important to differentiate the ability to launch an attack (such as probing an internal network for unpatched servers) and the ability of the remote adversary to collect and interpret the output of said attack.
  • PHP Remote File Inclusion CAPEC-193 In this pattern the adversary is able to load and execute arbitrary code remotely available from the application. This is usually accomplished through an insecurely configured PHP runtime environment and an improperly sanitized "include" or "require" call, which the user can then control to point to any web-accessible file. This allows adversaries to hijack the targeted application and force it to execute their own instructions.
  • XSS Through HTTP Query Strings CAPEC-32 An adversary embeds malicious script code in the parameters of an HTTP query string and convinces a victim to submit the HTTP request that contains the query string to a vulnerable web application. The web application then procedes to use the values parameters without properly validation them first and generates the HTML code that will be executed by the victim's browser.
  • XSS Through HTTP Headers CAPEC-86 An adversary exploits web applications that generate web content, such as links in a HTML page, based on unvalidated or improperly validated data submitted by other actors. XSS in HTTP Headers attacks target the HTTP headers which are hidden from most users and may not be validated by web applications.

Vulnerable Configurations

  • cpe:2.3:a:librechat:librechat:-:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:-:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.0.1:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.0.2:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.0.2:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.0.3:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.0.3:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.0.4:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.0.4:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.0.5:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.0.5:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.0.6:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.0.6:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.1.0:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.1.1:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.2.0:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.3.0:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.3.3:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.3.3:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.4.0:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.4.0:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.4.1:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.4.1:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.4.2:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.4.2:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.4.3:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.4.3:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.4.4:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.4.4:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.4.5:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.4.5:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.4.6:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.4.6:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.4.7:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.4.7:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.4.8:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.4.8:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.5.0:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.5.1:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.5.1:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.5.2:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.5.2:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.5.3:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.5.3:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.5.4:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.5.4:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.5.5:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.5.5:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.5.6:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.5.6:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.5.7:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.5.7:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.5.8:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.5.8:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.5.9:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.5.9:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.6.0:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.6.0:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.6.1:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.6.1:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.6.5:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.6.5:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.6.6:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.6.6:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.6.9:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.6.9:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.6.10:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.6.10:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.7.0:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.7.0:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.7.1:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.7.1:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.7.2:*:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.7.2:*:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.7.3:-:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.7.3:-:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.7.3:rc:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.7.3:rc:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.7.3:rc2:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.7.3:rc2:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.7.4:-:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.7.4:-:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.7.4:rc1:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.7.4:rc1:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.7.5:-:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.7.5:-:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.7.5:rc1:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.7.5:rc1:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.7.5:rc2:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.7.5:rc2:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.7.6:-:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.7.6:-:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.7.6:rc1:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.7.6:rc1:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.7.7:-:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.7.7:-:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.7.7:rc1:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.7.7:rc1:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.7.8:-:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.7.8:-:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.7.8:rc1:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.7.8:rc1:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.7.9:-:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.7.9:-:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.7.9:rc1:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.7.9:rc1:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.8.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.8.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:librechat:librechat:0.8.0:rc2:*:*:*:*:*:*
    cpe:2.3:a:librechat:librechat:0.8.0:rc2:*:*:*:*:*:*

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