CVE-2021-42838 json
Grand Vice info Co. webopac7 - Reflected XSS
published 2021-11-15 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-29793
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 50%
- public exploits
- 0
- none known
Summary
Grand Vice info Co. webopac7 book search field parameter does not properly restrict the input of special characters, thus unauthenticated attackers can inject JavaScript syntax remotely, and further perform reflective XSS attacks.
Exploit prediction
0.63% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Affected products
- Grand Vice info Co. webopac7
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
twcert.org.tw
/tw/cp-132-5286-b92c8-1.html
third-party-advisory
Sources
- CVE List CVE-2021-42838
- NVD CVE-2021-42838
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.