CVE-2021-3271

low-risk
Published 2021-02-18

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.

Do I need to act?

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0.41% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.8/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Pressbooks

Affected Vendors

Pressbooks

References (6)

Third Party Advisory https://github.com/pressbooks/pressbooks
Exploit https://github.com/pressbooks/pressbooks/pull/2072
Exploit https://www.gosecure.net/blog/2021/02/16/cve-2021-3271-pressbooks-stored-cross-s...
Third Party Advisory https://github.com/pressbooks/pressbooks
Exploit https://github.com/pressbooks/pressbooks/pull/2072
Exploit https://www.gosecure.net/blog/2021/02/16/cve-2021-3271-pressbooks-stored-cross-s...
26
/ 100
low-risk
Severity 19/34 · Moderate
Exploitability 2/34 · Minimal
Exposure 5/34 · Minimal