What is CVE-2026-1881?

CVE-2026-1881 is a medium-severity vulnerability in Broadstreetads Broadstreet, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-05-21.

How severe is CVE-2026-1881?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Broadstreetads Broadstreet

CVE-2026-1881

The Broadstreet plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.52.2 via the get_sponsored_meta AJAX action due to missing validation on a user controlled key. This makes it po…

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.000 (1.1th percentile) — read the EPSS interpretation.

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.

Affected products

Broadstreetads Broadstreet — versions 0

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

Frequently asked questions

What is CVE-2026-1881?: CVE-2026-1881 is a medium-severity vulnerability in Broadstreetads Broadstreet, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-05-21.
How severe is CVE-2026-1881?: Medium severity. CVSS v3 base score is 4.3 out of 10.