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Critical

Authentication Bypass in OwnID Passwordless Login for WordPress

IdentifiersCVE-2025-10294CWE-287

CVE-2025-10294 is a critical authentication bypass vulnerability in the OwnID Passwordless Login plugin for WordPress affecting all versions up to and including 1.3.4. The flaw is caused by improper validation of the ownid_shared_secret value during JWT-based authentication. Specifically, the plugin does not properly verify that ownid_shared_secret is non-empty before authenticating a user. On installations where the plugin has been installed but not fully configured, an unauthenticated attacker can abuse this logic flaw to authenticate as arbitrary users, including administrator accounts, without possessing valid credentials.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows unauthenticated account takeover of arbitrary WordPress users, including administrators, on affected sites that have not been fully configured. This can lead to full compromise of the WordPress application, including administrative access to site content and settings, installation of malicious plugins or themes, creation of backdoor accounts, and potential further compromise of the underlying hosting environment depending on available administrative capabilities.

Mitigation

If you can’t patch tonight, do this now.

As an immediate mitigation, disable the OwnID Passwordless Login plugin on affected WordPress instances, especially if deployment is incomplete or configuration has not been finalized. Verify whether ownid_shared_secret is set and non-empty, restrict access to administrative interfaces, monitor for suspicious logins or newly created administrator accounts, and review authentication logs for signs of abuse. Where possible, limit exposure of sites in staging or partially configured states until setup is complete.

Remediation

Patch, then assume compromise.

Update the OwnID Passwordless Login plugin to a version newer than 1.3.4 if a patched release is available from the vendor. Ensure the plugin is fully and correctly configured, including setting a valid non-empty ownid_shared_secret, before exposing the authentication workflow to users. If no patched version is available, disable or remove the plugin until a fix is applied.
PUBLIC EXPLOITS

Exploits

No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.

VALID 0 / 1 TOTALView more in app

All candidate exploits were filtered out by Mallory's validation.

What this page doesn’t show

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This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
Exposure mapping

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Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware1

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity6

Community discussion across Reddit, Mastodon, and other social sources.