CVE-2021-24478 json
Bookshelf <= 2.0.4 - Authenticated Stored Cross-Site Scripting (XSS)
published 2021-08-02 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11390
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 49%
- public exploits
- 0
- none known
Summary
The Bookshelf WordPress plugin through 2.0.4 does not sanitise or escape its "Paypal email address" setting before outputting it in the page, leading to an authenticated Stored Cross-Site Scripting issue
Exploit prediction
0.62% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/c73818e5-0734-46c9-9703-d211b4f58664 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
Affected products
- Unknown Bookshelf
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
wpscan.com
/vulnerability/c73818e5-0734-46c9-9703-d211b4f58664
exploit, third-party-advisory
Sources
- CVE List CVE-2021-24478
- NVD CVE-2021-24478
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.