7.5

CVE-2021-24881: passster_project passter Missing Authorization

CVSS: 7.5v3.1HighModified
Published 23-01-2023Last modified 02-04-2025
Open JSON

Vulnerability summary

CVE-2021-24881 is a high (CVSS 7.5) Missing Authorization vulnerability in passster_project passter. EPSS estimates a 0.82% chance of exploitation in the next 30 days, higher than 56.3% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.82%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 23-01-2023
    PublishedVulnerability first disclosed.
  2. 02-04-2025
    Last modifiedVulnerability information updated.

Description

The Passster WordPress plugin before 3.5.5.9 does not properly check for password, as well as that the post to be viewed is public, allowing unauthenticated users to bypass the protection offered by the plugin, and access arbitrary posts (such as private) content, by sending a specifically crafted request.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.82%

Chance of exploitation in the next 30 days

Percentile

56%

Versus all other CVEs

30-day change

0.00 pp

From 0.82% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.82%

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

Passster_project1 product
Unknown1 product
Wordpress1 product
  • content-protector≤ 3.5.5.8 (fixed in 3.5.5.9)

3 vendors · 3 products

References

2 links