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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.

PUBLISHED Reserved 2026-03-20 | Published 2026-03-20 | Updated 2026-03-20 | Assigner VulDB




MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
LOW: 3.5CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
LOW: 3.5CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
4.0AV:N/AC:L/Au:S/C:N/I:P/A:N/E:POC/RL:ND/RC:UR

Problem types

Cross Site Scripting

Code Injection

Product status

6.0.0
affected

Timeline

2026-03-20:Advisory disclosed
2026-03-20:VulDB entry created
2026-03-20:VulDB entry last update

Credits

xcxr (VulDB User) reporter

References

vuldb.com/?id.352021 (VDB-352021 | atjiu pybbs CommentApiController.java create cross site scripting) vdb-entry technical-description

vuldb.com/?ctiid.352021 (VDB-352021 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.773780 (Submit #773780 | atjiu pybbs 6.0.0 Improper Neutralization of Alternate XSS Syntax) third-party-advisory

fx4tqqfvdw4.feishu.cn/...yU1xTV1VcVTm9nzg?from=from_copylink exploit

cve.org (CVE-2026-4495)

nvd.nist.gov (CVE-2026-4495)

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