CVE-2026-4494 | THREATINT

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.

PUBLISHED Reserved 2026-03-20 | Published 2026-03-20 | Updated 2026-03-24 | 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.352020 (VDB-352020 | atjiu pybbs TopicApiController.java create cross site scripting) vdb-entry technical-description

vuldb.com/?ctiid.352020 (VDB-352020 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.773779 (Submit #773779 | atjiu pybbs 6.0.0 Improper Neutralization of Alternate XSS Syntax) third-party-advisory

fx4tqqfvdw4.feishu.cn/...0C0xB5jxcb4IZnre?from=from_copylink exploit

cve.org (CVE-2026-4494)

nvd.nist.gov (CVE-2026-4494)

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