CVE-2021-3271

PressBooks 5.17.3 contains a cross-site scripting (XSS). Stored XSS can be submitted via the Book Info's Long Description Body, and all actions to open or preview the books page will result in the triggering the stored XSS.

• CWE-79

• https://github.com/pressbooks/pressbooksThird Party Advisory
• https://github.com/pressbooks/pressbooks/pull/2072Exploit, Third Party Advisory
• https://www.gosecure.net/blog/2021/02/16/cve-2021-3271-pressbooks-stored-cross-site-scripting-proof-of-concept/Exploit, Third Party Advisory
• https://github.com/pressbooks/pressbooksThird Party Advisory
• https://github.com/pressbooks/pressbooks/pull/2072Exploit, Third Party Advisory
• https://www.gosecure.net/blog/2021/02/16/cve-2021-3271-pressbooks-stored-cross-site-scripting-proof-of-concept/Exploit, Third Party Advisory

Published

Feb 18, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2021-32704DHIS 2 is an information system for data capture, management…8.8
• CVE-2021-32705Nextcloud Server is a Nextcloud package that handles data st…7.5
• CVE-2021-32706Pi-hole's Web interface provides a central location to manag…8.8
• CVE-2021-32707Nextcloud Mail is a mail app for Nextcloud. In versions prio…4.3
• CVE-2021-32708Flysystem is an open source file storage library for PHP. Th…8.1
• CVE-2021-32709Shopware is an open source eCommerce platform. Creation of o…4.9
• CVE-2021-32710Shopware is an open source eCommerce platform. Potential ses…7.5
• CVE-2021-32711Shopware is an open source eCommerce platform. Versions prio…7.5
• CVE-2021-32712Shopware is an open source eCommerce platform. Versions prio…5.3
• CVE-2021-32713Shopware is an open source eCommerce platform. Versions prio…4.8
• CVE-2021-32714hyper is an HTTP library for Rust. In versions prior to 0.14…9.1
• CVE-2021-32715hyper is an HTTP library for rust. hyper's HTTP/1 server cod…5.3