CVE-2026-5607 - Vulnerability Details

- imprvhub mcp-browser-agent URL Parameter handlers.ts CallToolRequestSchema server-side request forgery

Description

A security vulnerability has been detected in imprvhub mcp-browser-agent up to 0.8.0. This impacts the function CallToolRequestSchema of the file src/handlers.ts of the component URL Parameter Handler. The manipulation of the argument request.params.name/request.params.arguments leads to server-side request forgery. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Published: 2026-04-06

Score: 5.3 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Impact

The flaw resides in the CallToolRequestSchema function of the URL Parameter Handler in the imprvhub mcp‑browser‑agent. By altering the request parameters "name" and "arguments", an attacker can cause the server to issue arbitrary outbound HTTP requests. This Server‑Side Request Forgery allows a remote actor to reach private networks, exfiltrate data, or redirect traffic to malicious destinations, all without authentication.

Affected Systems

All copies of imprvhub mcp‑browser‑agent up to version 0.8.0 are susceptible. The specific impact is limited to the component that processes URL parameters and forwards requests, but the reach of forged requests can cross organizational boundaries.

Risk and Exploitability

The CVSS base score of 5.3 indicates moderate severity. The exploit is publicly disclosed and can be executed remotely by sending crafted parameters; no authentication or privileged access is required. EPSS data is absent, and the flaw is not listed in the CISA KEV catalog, yet the availability of a public exploit and the remote nature of the attack keep the risk notable.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

imprvhub

mcp-browser-agent

affected

Version	Status	Constraints
`0.1`	affected	—
`0.2`	affected	—
`0.3`	affected	—
`0.4`	affected	—
`0.5`	affected	—
`0.6`	affected	—
`0.7`	affected	—
`0.8.0`	affected	—

No data.

Vendor Product Confidence Versions

Imprvhub

Mcp-browser-agent

100%

Version	Status	Scheme	Platform
`0.1`	affected	generic	—
`0.2`	affected	generic	—
`0.3`	affected	generic	—
`0.4`	affected	generic	—
`0.5`	affected	generic	—
`0.6`	affected	generic	—
`0.7`	affected	generic	—
`0.8.0`	affected	semver	—

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Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

Confirm the installed version of imprvhub mcp‑browser‑agent and test for the presence of the vulnerable CallToolRequestSchema code.
Contact the vendor or consult their support channels to determine whether an official fix or update has been issued.
Apply any vendor‑supplied patch or newer release when it becomes available immediately.
If no patch is reachable, block or tightly restrict outbound HTTP(s) requests originating from the affected component using firewall rules or container network policies.
Monitor application logs and network traffic for unexpected outbound connections originating from the mcp‑browser‑agent to detect potential abuse.

Generated by OpenCVE AI on April 6, 2026 at 04:51 UTC.

Tracking

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Advisories

No advisories yet.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00038.

Exploitation poc

Automatable no

Technical Impact partial

References

Link	Providers
https://github.com/wing3e/public_exp/issues/25
https://vuldb.com/submit/785034
https://vuldb.com/vuln/355398
https://vuldb.com/vuln/355398/cti

History

Tue, 07 Apr 2026 00:00:00 +0000

Type	Values Removed	Values Added
First Time appeared		Imprvhub Imprvhub mcp-browser-agent
Vendors & Products		Imprvhub Imprvhub mcp-browser-agent

Mon, 06 Apr 2026 15:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Mon, 06 Apr 2026 01:45:00 +0000

Type	Values Removed	Values Added
Description		A security vulnerability has been detected in imprvhub mcp-browser-agent up to 0.8.0. This impacts the function CallToolRequestSchema of the file src/handlers.ts of the component URL Parameter Handler. The manipulation of the argument request.params.name/request.params.arguments leads to server-side request forgery. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Title		imprvhub mcp-browser-agent URL Parameter handlers.ts CallToolRequestSchema server-side request forgery
Weaknesses		CWE-918
References		https://github.com/wing3e/public_exp/issues/25 https://vuldb.com/submit/785034 https://vuldb.com/vuln/355398 https://vuldb.com/vuln/355398/cti
Metrics		cvssV2_0 `{'score': 6.5, 'vector': 'AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR'}` cvssV3_0 `{'score': 6.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}` cvssV3_1 `{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}` cvssV4_0 `{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P'}`

Subscriptions

Imprvhub Mcp-browser-agent

MITRE

Status: PUBLISHED

Assigner: VulDB

Published: 2026-04-06T00:15:13.901Z

Updated: 2026-04-06T15:04:11.595Z

Reserved: 2026-04-05T14:03:44.670Z

Link: CVE-2026-5607

Vulnrichment

Updated: 2026-04-06T15:04:06.667Z

NVD

Status : Deferred

Published: 2026-04-06T01:16:39.817

Modified: 2026-04-29T01:00:01.613

Link: CVE-2026-5607

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-04-06T21:47:38Z

Weaknesses

CWE-918

Impact

Affected Systems

Risk and Exploitability

Tracking

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

Exploitation poc

Automatable no

Technical Impact partial

Subscriptions

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