CVE-2025-12677

KiotViet Sync <= 1.8.5 - Unauthenticated Webhook Key Exposure

2025-11-04 00:00

Strategic Overview

Status: Unpatched
Affected Plugin: KiotViet Sync
Affected Version: <= 1.8.5
CVSS: 5.3Medium
Weakness type: CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
CVE: CVE-2025-12677

At a glance

CVE-2025-12677 is a medium-severity Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the KiotViet Sync WordPress plugin, affecting versions <= 1.8.5. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. No fixed release has been reported yet; treat installations running this software as exposed. Disclosed November 2025, reported by kr0d.

Vulnerability Overview

The KiotViet Sync plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.8.5 via the register_api_route() function in kiotvietsync/includes/public_actions/WebHookAction.php. This makes it possible for unauthenticated attackers to extract the webhook token value when configured.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

KiotViet Sync <= 1.8.5 carries this weakness at register_api_route(), and reaching it takes no account at all. Sensitive information exposure means data the application intended to keep internal is returned to a caller who should not be able to see it.

The disclosed data — credentials, tokens, customer records or internal paths — is usually worth more as material for a follow-up attack than as an end in itself. No fixed build of this plugin is recorded for KiotViet Sync yet, so installs running <= 1.8.5 stay exposed until the vendor ships one.

Remediation

No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.

How does WordSec protect against this?

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. No patched version is recorded yet, which is the case where a filtering layer matters most, because there is nothing to update to.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2025-12677 https://www.wordfence.com/threat-intel/vulnerabilities/id/1114a84e-3425-402f-bcdc-a2ee05b2dbc9 https://nvd.nist.gov/vuln/detail/CVE-2025-12677

Related records

Other vulnerabilities in KiotViet Sync

CVSS Vector

5.3

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityLow
IntegrityNone
AvailabilityNone

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