5.4

CVE-2026-17522: Newsletters < 4.17 - Arbitrary Plugin Option Update via CSRF

Deferred
Published 29-08-2026Last modified 30-08-2026

Vulnerability summary

CVE-2026-17522 is a medium (CVSS 5.4) Cross-Site Request Forgery (CSRF) vulnerability in unknown newsletters. EPSS estimates a 0.09% chance of exploitation in the next 30 days, higher than 0.4% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 4.17.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.09%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Timeline

  1. 29-08-2026
    PublishedVulnerability first disclosed.
  2. 30-08-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.09%

Chance of exploitation in the next 30 days

Percentile

0%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.09% on 24-09-2026

24-09-202624-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (wpscan.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Unknown1 product
Wordpress1 product
  • newsletters-lite< 4.17

2 vendors · 2 products

References

2 links