CVE intelligence and bounded remediation

CVE-2024-6424 — Mesbook Mesbook security vulnerability

Critical CVSS 9.3

External server-side request vulnerability in MESbook 20221021.03 version, which could allow a remote, unauthenticated attacker to exploit the endpoint "/api/Proxy/Post?userName=&password=&uri=<FILE|INTERNAL URL|IP/HOST" or "/api/Proxy/Get?userName=&password=&uri=<ARCHIVO|URL INTERNA|IP/HOST" to read the source code of web files, read internal files or access network resources.

Severity
Critical
CVSS
9.3 (3.1)
Published
2024-07-01
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-918

Affected products

  • mesbook / mesbook / 20221021.03

Matched remediation archetype

Server-side request forgery and unintended proxying

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Check exposure

  • Inventory server-side URL fetchers, webhooks, importers, previews, redirects, proxies, and protocol handlers reachable from untrusted input.
  • Map egress paths to internal services, metadata endpoints, loopback, private address space, and privileged control planes.
  • Review DNS resolution, redirect, proxy, credential-forwarding, and URL parsing behavior without requesting sensitive targets.

Remediate safely

  • Replace arbitrary destinations with named integrations or a strict allowlist of schemes, hosts, ports, and paths.
  • Resolve and validate every destination and redirect hop, then enforce egress policy independently of application checks.
  • Remove ambient credentials and sensitive headers from fetchers; apply response size, time, and content limits.

Authoritative sources

Complete CVE record and remediation plan

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