CVE-2026-54527

CVE-2026-54527 affects the jupyterlab-git extension. The PlainTextDiff.ts createHeader() renders renamed-file headers by directly inserting Git filenames into innerHTML, enabling stored XSS that can lead to remote code execution. Affected range is before 0.54.0, with fix released in 0.54.0. Explo...

@jupyterlab/pullrequests (>=2.0.0-alpha.0, <=3.0.2) potentially affected by CVE-2026-54527 via @jupyterlab/git (>=0.30.0, <=0.40.0)

@jupyterlab/git NPM version =0.30.0, =2.0.0-alpha.0, =3.0.2 Source cves: CVE-2026-54527 Source advisory: OSV:GHSA-F962-V9HR-PFG5...

CVE-2026-54527

creationtimestamp| type| source ---|---|--- 2026-06-18 07:12:58+00:00| published-proof-of-concept| https://github.com/jupyterlab/jupyterlab-git/security/advisories/GHSA-f962-v9hr-pfg5 2026-07-08 22:02:05+00:00| seen| https://bsky.app/profile/stackflag.bsky.social/post/3mq64oaqtfb24 2026-07-09...