CVE-2026-120428

PandaWiki 3.65.0 through 3.87.5 Stored XSS via /static-file/ PDF Query-String Bypass

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

Chaitin · PandaWiki

CVSS v4.0 VULNCHECK

5.1 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 VULNCHECK

6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS

0.36% chance of exploitation in the next 30 days, 30th percentile

Published

2026-11-02

Proof-of-concept exploits (1)

• https://vul.yulun.ac.cn/20261101/pandawiki/snapshot

CVE references

• chaitin/PandaWiki/blob/v3.87.5/backend/handler/share/common.goREFERENCE
• chaitin/PandaWiki/blob/v3.87.5/backend/usecase/file.goREFERENCE
• chaitin/PandaWiki/blob/v3.87.5/web/admin/server.confREFERENCE
• chaitin/PandaWiki/issues/1845REFERENCE
• https://vul.yulun.ac.cn/20261101/pandawikiREFERENCE
• https://www.vulncheck.com/advisories/pandawiki-3.65.0-through-3.87.5-stored-xss-via-stati…ADVISORY

References

• CVE Record
• NVD entry