CVE-2020-21357 json
A stored cross site scripting (XSS) vulnerability in /admin.php?mod=user&act=addnew of PopojiCMS 1.2 allows attackers to execute arbitrary…
published 2021-08-06 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-14129
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 56%
- public exploits
- 0
- none known
Summary
A stored cross site scripting (XSS) vulnerability in /admin.php?mod=user&act=addnew of PopojiCMS 1.2 allows attackers to execute arbitrary web scripts or HTML via a crafted payload in the E-Mail field.
Exploit prediction
0.78% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/PopojiCMS/PopojiCMS/issues/24 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 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 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/PopojiCMS/PopojiCMS/issues/24
exploit, third-party-advisory
Sources
- CVE List CVE-2020-21357
- NVD CVE-2020-21357
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