CVE-2026-17520Newsletters < 4.17 - Unauthenticated API Access via Predictable API Key
Updated under an hour ago ()
Does this affect you?
It affects Unknown Newsletters. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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The Newsletters WordPress plugin before 4.17 does not generate its API key using a sufficiently random source, deriving it from a publicly known value, allowing unauthenticated attackers to compute the key and perform privileged actions such as adding and deleting subscribers and sending emails, when the optional API has been enabled.
- CVSS
- 4.8 MEDIUM (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
- Weakness (CWE)
- CWE-326
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- WPScan
- NVD analysis
- Deferred
- Record last updated
- Aug 30, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Unknown Newsletters unknown:newsletters (from the name) | before 4.17 | CNA record |
References
- https://wpscan.com/vulnerability/5a719e6b-22e1-4950-bf17-cd92e2ea6685/exploit, vdb-entry, technical-description
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.