7.5

CVE-2026-16602: unknown passster

CVSS: 7.5v3.1HighDeferred
Published 05-08-2026Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2026-16602 is a high (CVSS 7.5) vulnerability in unknown passster. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 36.2% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 4.3.6.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.43%
0%100%
Low · +0.12 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 05-08-2026
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

The Passster WordPress plugin before 4.3.6 does not perform a post-status check before returning post content from an unauthenticated REST endpoint, allowing unauthenticated users to disclose the content of non-public (draft, private, and pending) posts on sites that have a captcha provider configured.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.43%

Chance of exploitation in the next 30 days

Percentile

36%

Versus all other CVEs

30-day change

+0.12 pp

From 0.32% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.43%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (wpscan.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Unknown1 product
Wordpress1 product
  • content-protector≤ 4.3.5 (fixed in 4.3.6)

2 vendors · 2 products

References

2 links