Vulnerability · Published Mar 20, 2026 · Assigned by VulDB
CVE-2026-4495atjiu pybbs CommentApiController.java create cross site scripting
Low 3.5
In plain English
A low-severity cross-site scripting in pybbs from atjiu. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).
Severity (CVSS 3.1)3.5Low
Exploit odds (30 days)0.3%top 79.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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 to launch the attack remotely. The exploit has been released to the public and may be used for attacks.
Affected products (as reported)
Weakness: CWE-79, CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
References
- VDB-352021 | atjiu pybbs CommentApiController.java create cross site scripting vdb-entry, technical-description
- 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
- https://fx4tqqfvdw4.feishu.cn/docx/PN3YdPBpsowyU1xTV1VcVTm9nzg?from=from_copylink exploit