Vulnerability in PostyBirb Plus

[ Description ]Official description

A security flaw has been discovered in PostyBirb Plus up to 3.1.75. Affected by this vulnerability is an unknown functionality of the file ui/src/views/submissions/submission-forms/form-components/DescriptionInput.tsx of the component Submission Description Editor. The manipulation results in cross site scripting. The attack may be performed from remote. The exploit has been released to the public and may be used for attacks. Upgrading to version 3.1.76 addresses this issue. The patch is identified as 6b11c2345ad98ae59fd5404a9f1024eb1d10c8a4. It is advisable to upgrade the affected component.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/mvdicarlo/postybirb-plus/commit/6b11c2345ad98ae59fd5404a9f1024eb1d10c8a4
• github.com/mvdicarlo/postybirb-plus/issues/504
• github.com/mvdicarlo/postybirb-plus/pull/506
• github.com/mvdicarlo/postybirb-plus/releases/tag/v3.1.76
• github.com/user-attachments/files/32685547/report.md
• vuldb.com/cve/CVE-2026-120190
• vuldb.com/submit/1027356
• vuldb.com/vuln/429529
• vuldb.com/vuln/429529/cti