CVE-2026-65056
Last modified
CVE-2026-65056 is a high-severity vulnerability rated 8.3/10 on the CVSS scale. mcp-webresearch 0.1.7 contains a server-side request forgery vulnerability that allows attackers to access internal network services by supplying loopback, link-local, or cloud metadata addresses to the visit_page tool, which only validates the URL protocol without filtering private or reserved IP ranges. Attackers can steer the LLM-controlled URL argument through prompt injection to navigate the server's Playwright browser to internal endpoints such as cloud instance metadata services, causing the server to return sensitive internal page content including credentials into the model context.. EPSS estimates a 0.23% chance of exploitation in the next 30 days.
Description
mcp-webresearch 0.1.7 contains a server-side request forgery vulnerability that allows attackers to access internal network services by supplying loopback, link-local, or cloud metadata addresses to the visit_page tool, which only validates the URL protocol without filtering private or reserved IP ranges. Attackers can steer the LLM-controlled URL argument through prompt injection to navigate the server's Playwright browser to internal endpoints such as cloud instance metadata services, causing the server to return sensitive internal page content including credentials into the model context.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| mzxrai | mcp-webresearch | <= 0.1.7 |
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-65056?
How severe is CVE-2026-65056?
How do I fix CVE-2026-65056?
How Strix Helps
- One Click Account Takeover in GranolaHow a notification link broke out of Electron and led to a one-click account takeover.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-6505The ACAP framework contains a Time-of-Check to Time-of-Use (…5.1
- CVE-2026-65050Ninja Forms WordPress plugin version 3.14.8 and prior contai…7.1
- CVE-2026-65051Ninja Forms WordPress plugin version 3.14.8 contains a clien…6.9
- CVE-2026-65052Ninja Forms WordPress plugin version 3.14.8 and prior contai…8.7
- CVE-2026-65054MediaCMS 8.2.0 contains an information disclosure vulnerabil…8.2
- CVE-2026-65055Taiga 6.10.1 contains a missing authorization vulnerability …6.9
- CVE-2026-65057Keep (commit 91c75e0) contains a server-side request forgery…9.3
- CVE-2026-65058Trezor Safe 3, Safe 5, and Safe 7 firmware contains a confir…5.9
- CVE-2026-6506The InfusedWoo Pro plugin for WordPress is vulnerable to pri…8.8
- CVE-2026-65061Data::ReqRep::Shared versions before 0.05 for Perl create a …3.8
- CVE-2026-65062Data::SortedSet::Shared versions before 0.03 for Perl create…3.8
- CVE-2026-65063Data::RadixTree::Shared versions before 0.02 for Perl create…3.8
Are you affected by CVE-2026-65056?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST