The Newsletters WordPress plugin before 4.17 does not perform any nonce or capability check when saving one of its settings screens, and writes every submitted parameter into its own options, allowing attackers to make a logged in administrator overwrite arbitrary Newsletters WordPress plugin before 4.17 settings, including the credential protecting its API, via a Cross-Site Request Forgery attack.
CVE-2026-17522
MEDIUMPre-NVD 5.45.4—Trending — 5 sources updated this week
EchelonGraph scoreMEDIUM confidence
This medium-severity CVE scores 5.4 under CISA-ADP (Vulnrichment) CVSS v3.1 (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 99% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: cisa-adp, epss
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.4
- EG Score
- 5.4(medium)
- EG Risk
- 24(Track)EG Risk 24/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity54% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 1%
- KEV
- Not listed
Published
August 29, 2026
Last Modified
August 30, 2026
Advisory Details (1)
Auto-updated Aug 30, 2026🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available
Newsletters < 4.17 – Arbitrary Plugin Option Update via CSRF | CVE 2026-17522 | Plugin Vulnerabilities
https://wpscan.com/vulnerability/ebb8d4b7-14b5-49ed-b727-129123d6ce45/Vendor Advisories for CVE-2026-17522(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 9× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-08-30 01:29 UTCEG score recompute
- 2026-08-30 01:29 UTCGHSA enrichment
- 2026-08-30 01:22 UTCEPSS rescore
- 2026-08-30 01:09 UTCEG score recompute▲ 5.40
- 2026-08-30 01:08 UTCGHSA enrichment
- 2026-08-30 01:08 UTCMITRE cvelistV5CVSS v3 → 5.4 · severity → MEDIUM
- 2026-08-29 06:21 UTCNVD update
- 2026-08-29 06:14 UTCEG score recompute
- 2026-08-29 06:12 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-17522?
CVE-2026-17522 is a medium vulnerability published on August 29, 2026. The Newsletters WordPress plugin before 4.17 does not perform any nonce or capability check when saving one of its settings screens, and writes every submitted parameter into its own options, allowing attackers to make a logged in administrator overwrite arbitrary Newsletters WordPress plugin…
When was CVE-2026-17522 disclosed?
CVE-2026-17522 was first published in the National Vulnerability Database on August 29, 2026, with the most recent update on August 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-17522 actively exploited?
CVE-2026-17522 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 99.2% of all scored CVEs.
What is the CVSS score of CVE-2026-17522?
CVE-2026-17522 has a CVSS v3.1 base score of 5.4 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-17522?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-17522, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-17522
Is Your Infrastructure Affected by CVE-2026-17522?
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