9.8

CVE-2026-97283: liquid web / stellarwp advanced post manager Deserialization of Untrusted Data

CVSS: 9.8v3.1CriticalDeferred
Published 05-10-2026Last modified 05-10-2026
Open JSON

Vulnerability summary

CVE-2026-97283 is a critical (CVSS 9.8) Deserialization of Untrusted Data vulnerability in liquid web / stellarwp advanced post manager. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 27.8% of scored vulnerabilities. Fixed in 4.5.6.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.36%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 05-10-2026
    PublishedVulnerability first disclosed.
  2. 05-10-2026
    Last modifiedVulnerability information updated.

Description

Deserialization of Untrusted Data vulnerability in Liquid Web / StellarWP Advanced Post Manager advanced-post-manager allows Object Injection.This issue affects Advanced Post Manager: from n/a through 4.5.5.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.36%

Chance of exploitation in the next 30 days

Percentile

28%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

06-10-202620-10-2026
EPSS score
0.36%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Liquid web / stellarwp1 product
Wordpress1 product
  • advanced-post-manager≤ 4.5.5 (fixed in 4.5.6)

2 vendors · 2 products

References

2 links