Vulnerability · Published Dec 14, 2021 · Assigned by @huntrdev
CVE-2021-3831Cross-site Scripting (XSS) - Reflected in gnuboard/gnuboard5
High 7.1
In plain English
A high-severity cross-site scripting in gnuboard/gnuboard5 from gnuboard. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.8% (higher than 79% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei, public proof-of-concept code.
Severity (CVSS 3.0)7.1High
Exploit odds (30 days)1.8%top 20.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack tooling2Nuclei, Public PoC
Official description
gnuboard5 is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| gnuboard | gnuboard/gnuboard5 | unspecified – before 5.4.20 |
Weakness: CWE-79 · Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
References
- https://huntr.dev/bounties/25775287-88cd-4f00-b978-692d627dff04 x_refsource_CONFIRM
- https://github.com/gnuboard/gnuboard5/commit/2e81619ea87bc9c0b4a073d8df3c7693a6fdbf0d x_refsource_MISC