CVE-2021-42329 json
ShinHer Information Co., LTD. ShinHer StudyOnline System - Stored XSS
published 2021-10-15 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-29303
- cvss
- 5.4
- 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 48%
- public exploits
- 0
- none known
Summary
The “List_Add” function of message board of ShinHer StudyOnline System does not filter special characters in the title parameter. After logging in with user’s privilege, remote attackers can inject JavaScript and execute stored XSS attacks.
Exploit prediction
0.59% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 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
- ShinHer Information Co., LTD. ShinHer StudyOnline System
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
twcert.org.tw
/tw/cp-132-5199-61238-1.html
third-party-advisory
Sources
- CVE List CVE-2021-42329
- NVD CVE-2021-42329
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.