What is CVE-2021-34629?

CVE-2021-34629 is a medium-severity vulnerability in Sendgrid, classified under Missing Authorization. CVSS score: 4.3/10. Published 2021-07-30.

How severe is CVE-2021-34629?

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

Is CVE-2021-34629 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Sendgrid

CVE-2021-34629

The SendGrid WordPress plugin is vulnerable to authorization bypass via the get_ajax_statistics function found in the ~/lib/class-sendgrid-statistics.php file which allows authenticated users to export statistic for a WordPress multi-site main site, in versions up to and including 1.11.8.

Vulnerability class: Broken Access Control

Published 2021-07-30 · last modified 2026-06-17.

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: 0.007 (51.3th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Sendgrid — versions 1.11.8

Weakness classification (CWE)

CWE-862 — Missing Authorization

Public proof-of-concept exploits

20142995/nuclei-templates

References

www.wordfence.com/vulnerability-advisories/ (Third Party Advisory)

Frequently asked questions

What is CVE-2021-34629?: CVE-2021-34629 is a medium-severity vulnerability in Sendgrid, classified under Missing Authorization. CVSS score: 4.3/10. Published 2021-07-30.
How severe is CVE-2021-34629?: Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2021-34629 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.