CVE-2018-20977

Name: CVE-2018-20977
Creator: NVD / NIST
Published: 2019-08-21T19:15:12.95+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.90%

Last modified Jun 17, 2026

CVE-2018-20977 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. The all-in-one-schemaorg-rich-snippets plugin before 1.5.0 for WordPress has XSS on the settings page.. EPSS estimates a 0.90% chance of exploitation in the next 30 days.

Description

The all-in-one-schemaorg-rich-snippets plugin before 1.5.0 for WordPress has XSS on the settings page.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.90%

55.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Brainstormforce	Schema	< 1.5.0

References

https://wordpress.org/plugins/all-in-one-schemaorg-rich-snippets/#developersRelease Notes
https://wordpress.org/plugins/all-in-one-schemaorg-rich-snippets/#developersRelease Notes

Timeline

Published: Aug 21, 2019
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2018-20977?

The all-in-one-schemaorg-rich-snippets plugin before 1.5.0 for WordPress has XSS on the settings page.

How severe is CVE-2018-20977?

CVE-2018-20977 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.90% probability of exploitation in the next 30 days.

How do I fix CVE-2018-20977?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-20977?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST