CVE-2026-120428 Details
Description
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.
A stored cross-site scripting vulnerability has been identified in PandaWiki versions 3.65.0 through 3.87.5. This vulnerability allows unauthenticated attackers to upload HTML files disguised as image files via the file upload endpoint. Once uploaded, attackers can trick administrators into accessing these files through a specific URL, bypassing the server's attachment headers. This manipulation serves the HTML content inline, executing any embedded scripts and potentially stealing session tokens for unauthorized access.
Users can update to PandaWiki versions after 3.87.5, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Nov 2, 2026CISA-ADP
Assessed Nov 2, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/chaitin/PandaWiki/blob/v3.87.5/backend/handler/share/common.go | [email protected] | Source CodeVendor |
| https://github.com/chaitin/PandaWiki/blob/v3.87.5/backend/usecase/file.go | [email protected] | Source CodeVendor |
| https://github.com/chaitin/PandaWiki/blob/v3.87.5/web/admin/server.conf | [email protected] | Source CodeVendor |
| https://github.com/chaitin/PandaWiki/issues/1845 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://vul.yulun.ac.cn/20261101/pandawiki/ | [email protected] | ExploitTechnical Analysis |
| https://www.vulncheck.com/advisories/pandawiki-3.65.0-through-3.87.5-stored-xss-via-static-file-pdf-query-string-bypass | [email protected] | Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| PandaWiki | >= 3.65.0, <= 3.87.5 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 2, 2026 | CVE Modified | CISA-ADP |
| Nov 2, 2026 | New CVE Received | [email protected] |