Medium severity4.8NVD Advisory· Published Feb 18, 2021· Updated Jun 17, 2026
CVE-2021-3271
CVE-2021-3271
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
pressbooks/pressbooksPackagist | < 5.18.0 | 5.18.0 |
Affected products
3cpe:2.3:a:pressbooks:pressbooks:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:pressbooks:pressbooks:*:*:*:*:*:*:*:*range: <=5.17.3
- (no CPE)
Patches
Vulnerability mechanics
References
6- github.com/pressbooks/pressbooks/pull/2072nvdExploitThird Party AdvisoryWEB
- www.gosecure.net/blog/2021/02/16/cve-2021-3271-pressbooks-stored-cross-site-scripting-proof-of-concept/nvdExploitThird Party Advisory
- github.com/advisories/GHSA-9652-78hp-w58cghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2021-3271ghsaADVISORY
- github.com/pressbooks/pressbooks/commit/941a8c5eaeacea5eb211b54ee55bc0348139cbd8ghsaWEB
- www.gosecure.net/blog/2021/02/16/cve-2021-3271-pressbooks-stored-cross-site-scripting-proof-of-conceptghsaWEB
News mentions
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