CVE-2020-35240 json
FluxBB 1.5.11 is affected by cross-site scripting (XSS in the Blog Content component.
published 2020-12-30 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-22918
- cvss
- 4.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 63%
- public exploits
- 0
- none known
Summary
FluxBB 1.5.11 is affected by cross-site scripting (XSS in the Blog Content component. This vulnerability can allow an attacker to inject the XSS payload in "Blog Content" and each time any user will visit the blog, the XSS triggers and the attacker can able to steal the cookie according to the crafted payload.
Exploit prediction
1.03% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/hemantsolo/CVE-Reference/blob/main/CVE-2020-35240.md referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 4.8 | CVSS:3.1/AV:N/AC:L/PR:H/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
/hemantsolo/CVE-Reference/blob/main/CVE-2020-35240.md
exploit, third-party-advisory
-
fluxbb.org
/downloads/
vendor-advisory
-
github.com
/hemantsolo/CVE-Reference/issues/1
third-party-advisory
Sources
- CVE List CVE-2020-35240
- NVD CVE-2020-35240
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