RCE in Atjiu Pybbs
CVE-2026-4495
A security flaw has been discovered in atjiu pybbs 6.0.0. This impacts the function create of the file src/main/java/co/yiiu/pybbs/controller/api/CommentApiController.java. The manipulation results in cross site scripting. It is possible t…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.000 (12.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.
Affected products
- Atjiu Pybbs — versions 6.0.0
Weakness classification (CWE)
References
- VDB-352021 | atjiu pybbs CommentApiController.java create cross site scripting (technical-description, vdb-entry)
- VDB-352021 | CTI Indicators (IOB, IOC, TTP, IOA) (signature, permissions-required)
- Submit #773780 | atjiu pybbs 6.0.0 Improper Neutralization of Alternate XSS Syntax (third-party-advisory)
- cna@vuldb.com (exploit)
Frequently asked questions
- What is CVE-2026-4495?
- CVE-2026-4495 is a low-severity vulnerability in Atjiu Pybbs, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2026-03-20.
- How severe is CVE-2026-4495?
- Low severity. CVSS v3 base score is 3.5 out of 10.