CVE-2021-25295 json
OpenCATS through 0.9.5-3 has multiple Cross-site Scripting (XSS) issues.
published 2021-01-18 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-12195
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 75%
- public exploits
- 0
- none known
Summary
OpenCATS through 0.9.5-3 has multiple Cross-site Scripting (XSS) issues.
Exploit prediction
1.54% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- snoopysecurity.github.io https://snoopysecurity.github.io/web-application-security/2021/01/16/09_opencats_php_object_injection.html referenced PoC, tagged "exploit" by a source, unverified
- github.com https://github.com/snoopysecurity/snoopysecurity.github.io/blob/master/web-application-security/2021/01/16/09_opencats_php_object_injection.html 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
-
snoopysecurity.github.io
/web-application-security/2021/01/16/09_opencats_php_object_injection.html
exploit, third-party-advisory
-
github.com
/snoopysecurity/snoopysecurity.github.io/blob/master/web-application-security/2021/01/16/09_opencats_php_objec
exploit, third-party-advisory
-
opencats.org
/news/
product, vendor-advisory
Sources
- CVE List CVE-2021-25295
- NVD CVE-2021-25295
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