Is CVE-2026-97283 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-97283 being exploited in the wild.

How severe is CVE-2026-97283?

Critical severity, with a CVSS score of 9.8, published 5 October 2026.

Which products and versions are affected?

StellarWP Advanced Post Manager through 4.5.5.

Is there a fix for CVE-2026-97283?

Yes: fixed in 4.5.6. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-97283 attacked?

It is attacked over the network.

Am I affected by CVE-2026-97283?

Check whether you run StellarWP Advanced Post Manager at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-97283: StellarWP Advanced Post Manager PHP object injection

CVE-2026-97283 · Severity: critical · CVSS 9.8 · Published 2026-10-05

Advanced Post Manager is a WordPress plugin that manages content publishing workflows. A PHP object injection vulnerability allows authenticated attackers with contributor-level privileges to execute arbitrary code on the website server, potentially leading to complete site compromise and data theft.

Vendors: StellarWP.

Quick answers

Is CVE-2026-97283 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-97283 being exploited in the wild.
How severe is CVE-2026-97283?: Critical severity, with a CVSS score of 9.8, published 5 October 2026.
Which products and versions are affected?: StellarWP Advanced Post Manager through 4.5.5.
Is there a fix for CVE-2026-97283?: Yes: fixed in 4.5.6. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-97283 attacked?: It is attacked over the network.
Am I affected by CVE-2026-97283?: Check whether you run StellarWP Advanced Post Manager at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 4.5.6

Technical details

The plugin improperly deserializes untrusted user-supplied data, allowing object injection attacks. An authenticated attacker with contributor privileges can craft malicious serialized objects to trigger arbitrary code execution on the server. A patch is available in version 4.5.6.

Affected products

StellarWP Advanced Post Manager through 4.5.5

Timeline

2026-10-05: disclosed
2026-10-03: patched

References

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