CVE-2021-39250 json
Invision Community (aka IPS Community Suite or IP-Board) before 4.6.5.1 allows stored XSS, with resultant code execution, because an upload…
published 2021-08-17 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-25612
- cvss
- 5.4
- 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 57%
- public exploits
- 0
- none known
Summary
Invision Community (aka IPS Community Suite or IP-Board) before 4.6.5.1 allows stored XSS, with resultant code execution, because an uploaded file can be placed in an IFRAME element within user-generated content. For code execution, the attacker can rely on the ability of an admin to install widgets, disclosure of the admin session ID in a Referer header, and the ability of an admin to use the templating engine (e.g., Edit HTML).
Patch / fix
- invisioncommunity invision_power_board 4.6.5.1
Exploit prediction
0.81% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- ssd-disclosure.com https://ssd-disclosure.com/ssd-advisory-ip-board-stored-xss-to-rce-chain/ 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
-
ssd-disclosure.com
/ssd-advisory-ip-board-stored-xss-to-rce-chain/
exploit, third-party-advisory
-
invisioncommunity.com
/release-notes/4651-r102/
release-notes, vendor-advisory
Sources
- CVE List CVE-2021-39250
- NVD CVE-2021-39250
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