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PatchSiren cyber security CVE debrief

CVE-2026-49769 Tomdever CVE debrief

CVE-2026-49769 is a critical vulnerability in the wpForo Forum plugin for WordPress, affecting versions up to and including 3.1.0. This vulnerability allows unauthenticated attackers to inject PHP objects, potentially leading to remote code execution, among other impacts. The vulnerability has been assigned a CVSS score of 9.8, indicating a high severity level. The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, reflecting its critical nature.

Vendor
Tomdever
Product
wpForo Forum
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-15
Original CVE updated
2026-06-15
Advisory published
2026-06-15
Advisory updated
2026-06-15

Who should care

Administrators and users of WordPress sites utilizing the wpForo Forum plugin, especially those on version 3.1.0 or earlier, should be aware of this vulnerability and take immediate action to mitigate potential risks.

Technical summary

The vulnerability is caused by an unauthenticated PHP object injection weakness, categorized under CWE-502. This type of vulnerability can allow attackers to manipulate PHP objects, potentially leading to various malicious outcomes including code execution.

Defensive priority

High

Recommended defensive actions

  • Update the wpForo Forum plugin to a version that fixes this vulnerability. Details on the patched version can be found on the vendor's official website or through security advisories.
  • If immediate update is not possible, consider applying workarounds or mitigations suggested by the vendor or the security community, such as restricting access to the plugin's functionality or enhancing monitoring for ab

Evidence notes

Evidence for this CVE comes from Patchstack, as noted in the sourceItem metadata.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-49769 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-49769

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-49769 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-49769

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.