CVE intelligence and bounded remediation

CVE-2022-1379 — URL Restriction Bypass in GitHub repository plantuml/plantuml prior to V1.2022.5

Critical CVSS 9.1

URL Restriction Bypass in GitHub repository plantuml/plantuml prior to V1.2022.5. An attacker can abuse this to bypass URL restrictions that are imposed by the different security profiles and achieve server side request forgery (SSRF). This allows accessing restricted internal resources/servers or sending requests to third party servers.

Severity
Critical
CVSS
9.1 (3.1)
Published
2022-05-14
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-918

Affected products

  • plantuml / plantuml
  • fedoraproject / fedora / 35
  • fedoraproject / fedora / 36

Matched remediation archetype

Server-side request forgery and unintended proxying

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

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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