CVE-2026-4494

LOW

atjiu pybbs TopicApiController.java create cross site scripting

Title source: cna

Description

A vulnerability was identified in atjiu pybbs 6.0.0. This affects the function create of the file src/main/java/co/yiiu/pybbs/controller/api/TopicApiController.java. The manipulation leads to cross site scripting. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.

References (4)

Core 4

Core References

Exploit exploit

https://fx4tqqfvdw4.feishu.cn/docx/EKVgdqWIzo70C0xB5jxcb4IZnre?from=from_copylink

Vdb Entry, Technical Description vdb-entry technical-description

VDB-352020 | atjiu pybbs TopicApiController.java create cross site scripting

https://vuldb.com/?id.352020

Signature, Permissions Required signature permissions-required

VDB-352020 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/?ctiid.352020

Third Party Advisory third-party-advisory

Submit #773779 | atjiu pybbs 6.0.0 Improper Neutralization of Alternate XSS Syntax

https://vuldb.com/?submit.773779

Scores

CVSS v3 3.5

EPSS 0.0029

EPSS Percentile 21.0%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-79 CWE-94

Status published

Products (1)

atjiu/pybbs 6.0.0

Published Mar 20, 2026

Tracked Since Mar 20, 2026