KiotViet Sync <= 1.8.5 - Unauthenticated Webhook Key Exposure

published 2025-11-05 last yr. modified 2026-10-18 24d ago also EUVD-2025-37789

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits: 0; none known

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.

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CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: last yr. (2025-11-05)

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

mykiot KiotViet Sync

Classification

Weakness

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Technology feeds

WordPress rss critical rss

References

Sources

CVE List CVE-2025-12677
NVD CVE-2025-12677

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