CVE-2026-120428

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.

References

• https://github.com/chaitin/PandaWiki/blob/v3.87.5/backend/handler/share/common.go
• https://github.com/chaitin/PandaWiki/blob/v3.87.5/backend/usecase/file.go
• https://github.com/chaitin/PandaWiki/blob/v3.87.5/web/admin/server.conf
• https://github.com/chaitin/PandaWiki/issues/1845
• https://vul.yulun.ac.cn/20261101/pandawiki/