Broken Link Notifier <= 1.3.0 - Unauthenticated Server-Side Request Forgery
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
The Broken Link Notifier plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 1.3.0 via the ajax_blinks() function which ultimately calls the check_url_status_code() function. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-6851
- 2026-10-03 Alias added: GHSA-x4vc-m5g5-663m
References
More apos37 vulnerabilities
- TI-2025-11040 ERI File Library <= 1.1.0 - Missing Authorization to Unauthenticated Protected File Download CVSS 3.1MEDIUM 5.3
- TI-2025-06212 Broken Link Notifier <= 1.3.0 - Authenticated (Contributor+) CSV Injection CVSS 3.1MEDIUM 4.1
Sources
- CVE-2025-6851 · CVE Program
- CVE-2025-6851 · NVD
- FIRST EPSS
- GHSA-x4vc-m5g5-663m · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences