CVE-2021-33347 json
An issue was discovered in JPress v3.3.0 and below.
published 2021-06-18 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-20055
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 45%
- public exploits
- 0
- none known
Summary
An issue was discovered in JPress v3.3.0 and below. There are XSS vulnerabilities in the template module and tag management module. If you log in to the background by means of weak password, the storage XSS vulnerability can occur.
Exploit prediction
0.55% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/JPressProjects/jpress/issues/152 referenced PoC, tagged "exploit" by a source, unverified
- github.com https://github.com/JPressProjects/jpress/issues/152#issuecomment-850119847 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 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/JPressProjects/jpress/issues/152
exploit, issue-tracking, third-party-advisory
-
github.com
/JPressProjects/jpress/issues/152#issuecomment-850119847
exploit, issue-tracking, third-party-advisory
Sources
- CVE List CVE-2021-33347
- NVD CVE-2021-33347
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.