Auth bypass in Flycart Upsellwp

CVE-2026-25419

Missing Authorization vulnerability in flycart UpsellWP checkout-upsell-and-order-bumps allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects UpsellWP: from n/a through <= 2.2.5.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.002 (9.3th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 9.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-25419: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-25419?
CVE-2026-25419 is a medium-severity vulnerability in Flycart Upsellwp, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-02-19.
How severe is CVE-2026-25419?
Medium severity. CVSS v3 base score is 4.3 out of 10.