Vulnerability CVE-2021-3271
Published: 2021-02-18

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.

Type:

CWE-79

 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'))

CVSS2 => (AV:N/AC:M/Au:S/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
3.5/10
2.9/10
6.8/10
Exploit range
Attack complexity
Authentication
Remote
Medium
Single time
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Pressbooks -> Pressbooks 

 References:
https://github.com/pressbooks/pressbooks
https://github.com/pressbooks/pressbooks/pull/2072
https://www.gosecure.net/blog/2021/02/16/cve-2021-3271-pressbooks-stored-cross-site-scripting-proof-of-concept/
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