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.

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 to launch the attack remotely. The exploit has been released to the public and may be used for attacks.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (18.8th 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

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (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.