Atjiu Pybbs 6.0.0: XSS via CommentApiController.create
CVE-2026-4495 Published on March 20, 2026
atjiu pybbs CommentApiController.java create cross site scripting
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.
Timeline
Advisory disclosed
VulDB entry created
VulDB entry last update
Weakness Types
What is a XSS Vulnerability?
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVE-2026-4495 has been classified to as a XSS vulnerability or weakness.
What is a Code Injection Vulnerability?
The software constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
CVE-2026-4495 has been classified to as a Code Injection vulnerability or weakness.
Affected Versions
atjiu pybbs Version 6.0.0 is affected by CVE-2026-4495Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.