---
id: CVE-2026-120428
title: >-
  PandaWiki 3.65.0 through 3.87.5 Stored XSS via /static-file/ PDF Query-String
  Bypass
summary: >-
  PandaWiki 3.65.0 through 3.87.5 contains a stored cross-site scripting
  vulnerability that allows unauthenticated attackers to upload HTML files with
  image extensions via /share/v1/common/file/upload. Attackers can lure
  administrators to …
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-79
vendor: Chaitin
product: PandaWiki
affected:
  - PandaWiki >= 3.65.0 <= 3.87.5
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-02T17:15:22.970624Z'
exploitAvailable: true
published: '2026-11-02'
updated: '2026-11-02'
sourceUpdated: '2026-11-02T17:34:57.661Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-120428'
references:
  - url: 'https://github.com/chaitin/PandaWiki/issues/1845'
  - url: 'https://vul.yulun.ac.cn/20261101/pandawiki/'
  - url: 'https://github.com/chaitin/PandaWiki/blob/v3.87.5/web/admin/server.conf'
  - url: 'https://github.com/chaitin/PandaWiki/blob/v3.87.5/backend/usecase/file.go'
  - url: >-
      https://github.com/chaitin/PandaWiki/blob/v3.87.5/backend/handler/share/common.go
  - url: >-
      https://www.vulncheck.com/advisories/pandawiki-3.65.0-through-3.87.5-stored-xss-via-static-file-pdf-query-string-bypass
    label: >-
      VulnCheck Advisory: PandaWiki 3.65.0 through 3.87.5 Stored XSS via
      /static-file/ PDF Query-String Bypass
tags:
  - cve.org
  - exploit-available
epss: 0.00359
epssPercentile: 0.29817
ingestedAt: '2026-11-05T19:30:42.736Z'
---

## Overview

PandaWiki 3.65.0 through 3.87.5 contains a stored cross-site scripting vulnerability that allows unauthenticated attackers to upload HTML files with image extensions via /share/v1/common/file/upload. Attackers can lure administrators to /static-file/<key>?a=.pdf, bypassing the nginx attachment header to serve HTML inline and steal the panda_wiki_token JWT for session takeover.

## Affected

- `PandaWiki >= 3.65.0 <= 3.87.5`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.