CVE-2026-54528

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 65% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 7.1Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

JupyterLab Git is a Git extension for JupyterLab. Prior to 0.54.0, jupyterlab-git uses fnmatch.fnmatchcase() in GitHandler.prepare() in jupyterlab_git/handlers.py to enforce excluded_paths, allowing an authenticated user on a case-insensitive filesystem to vary URL path casing and read excluded directories. This issue is fixed in version 0.54.0.

CVSS v3
7.1
EG Score
7.1HIGHmedium confidence
EG Risk
48
EG Risk 48/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity71% × 45%
Exploitation40% × 40%
Automatability0% × 15%
EPSS PROB
0.4%
EPSS %ILE
33rd
KEV
Not listed

Published

June 19, 2026

Last Modified

July 15, 2026

Advisory Details (3)

Auto-updated Jul 8, 2026
🔬 Proof of concept available. Patch available. Sources: github_release, github, github_commit.
github_release Patch Available

v0.54.0

Patch available: jupyterlab/jupyterlab-git v0.54.0

https://github.com/jupyterlab/jupyterlab-git/releases/tag/v0.54.0
github_commit

commit 460035275b59 (jupyterlab/jupyterlab-git)

Fix landed in jupyterlab/jupyterlab-git commit 460035275b59 — awaiting tagged release

https://github.com/jupyterlab/jupyterlab-git/commit/460035275b5963dc96e364e60ba6a73717fbd033
githubMentions a patch (unverified)🟡 PoC Available

jupyterlab-git excluded_paths Case-Sensitivity Bypass Allows Reading Excluded Directories · Advisory · jupyterlab/jupyterlab-git · GitHub

https://github.com/jupyterlab/jupyterlab-git/security/advisories/GHSA-436q-jwfr-rm2h

Vendor Advisories for CVE-2026-54528(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
jupyterlab-git0.1.1 ... 0.9.1 (86 versions)
  • every version up to 0.54.0: fixed in 0.54.0
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 28× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 120 total refreshes for this CVE.

  1. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:12 UTCEPSS rescore
  3. 2026-10-07 23:48 UTCEPSS rescore
  4. 2026-10-06 15:18 UTCEPSS rescore
  5. 2026-10-05 17:43 UTCEPSS rescore
  6. 2026-10-04 23:22 UTCEPSS rescore
  7. 2026-10-03 14:26 UTCEPSS rescore
  8. 2026-10-03 04:39 UTCOSV refresh
  9. 2026-10-02 17:56 UTCEPSS rescore
  10. 2026-10-01 19:50 UTCEPSS rescore
  11. 2026-09-30 15:03 UTCEPSS rescore
  12. 2026-09-29 15:22 UTCEPSS rescore
  13. 2026-09-28 13:51 UTCEPSS rescore
  14. 2026-09-27 13:48 UTCEPSS rescore
  15. 2026-09-26 15:59 UTCEPSS rescore
  16. 2026-09-24 14:04 UTCEPSS rescore
  17. 2026-09-23 17:54 UTCEPSS rescore
  18. 2026-09-20 20:16 UTCEPSS rescore
  19. 2026-09-18 19:28 UTCEPSS rescore
  20. 2026-09-17 19:31 UTCEPSS rescore
  21. 2026-09-16 14:08 UTCEPSS rescore
  22. 2026-09-16 05:15 UTCEPSS rescore
  23. 2026-09-15 03:11 UTCEPSS rescore
  24. 2026-09-14 02:13 UTCEG score recompute
  25. 2026-09-13 16:47 UTCEPSS rescore
Show 75 more
  1. 2026-09-13 13:08 UTCEG score recompute
  2. 2026-09-11 14:53 UTCEPSS rescore
  3. 2026-09-10 09:35 UTCEPSS rescore
  4. 2026-09-08 22:01 UTCEPSS rescore
  5. 2026-09-07 16:01 UTCEPSS rescore
  6. 2026-09-06 13:47 UTCEPSS rescore
  7. 2026-09-04 05:06 UTCEPSS rescore
  8. 2026-09-02 14:12 UTCEPSS rescore
  9. 2026-09-01 13:54 UTCEPSS rescore
  10. 2026-09-01 04:40 UTCEPSS rescore
  11. 2026-08-30 20:47 UTCEG score recompute
  12. 2026-08-30 19:17 UTCEPSS rescore
  13. 2026-08-30 01:22 UTCEPSS rescore
  14. 2026-08-28 21:41 UTCEPSS rescore
  15. 2026-08-27 14:25 UTCEPSS rescore
  16. 2026-08-26 14:46 UTCEPSS rescore
  17. 2026-08-25 13:49 UTCEPSS rescore
  18. 2026-08-25 02:37 UTCEG score recompute
  19. 2026-08-24 14:00 UTCEG score recompute
  20. 2026-08-23 12:19 UTCEG score recompute
  21. 2026-08-23 00:19 UTCEPSS rescore
  22. 2026-08-22 23:42 UTCEG score recompute
  23. 2026-08-21 23:49 UTCEPSS rescore
  24. 2026-08-21 09:26 UTCEG score recompute
  25. 2026-08-20 22:55 UTCEPSS rescore
  26. 2026-08-20 08:00 UTCEG score recompute
  27. 2026-08-19 17:04 UTCEPSS rescore
  28. 2026-08-19 07:02 UTCEG score recompute
  29. 2026-08-18 13:48 UTCEPSS rescore
  30. 2026-08-17 13:47 UTCEPSS rescore
  31. 2026-08-16 20:26 UTCEG score recompute
  32. 2026-08-16 14:56 UTCEPSS rescore
  33. 2026-08-16 05:53 UTCEG score recompute
  34. 2026-08-16 02:14 UTCEPSS rescore
  35. 2026-08-15 04:42 UTCEG score recompute
  36. 2026-08-15 01:30 UTCEPSS rescore
  37. 2026-08-14 03:29 UTCEG score recompute
  38. 2026-08-13 22:00 UTCEPSS rescore
  39. 2026-08-13 02:18 UTCEG score recompute
  40. 2026-08-12 13:51 UTCEPSS rescore
  41. 2026-08-12 01:06 UTCEG score recompute
  42. 2026-08-11 12:30 UTCEG score recompute
  43. 2026-08-11 00:00 UTCEPSS rescore
  44. 2026-08-09 22:34 UTCEG score recompute
  45. 2026-08-09 13:46 UTCEPSS rescore
  46. 2026-08-08 21:22 UTCEG score recompute
  47. 2026-08-08 16:37 UTCEPSS rescore
  48. 2026-08-07 20:11 UTCEG score recompute
  49. 2026-08-06 18:59 UTCEG score recompute
  50. 2026-08-06 13:47 UTCEPSS rescore
  51. 2026-08-06 06:23 UTCEG score recompute
  52. 2026-08-05 19:17 UTCEPSS rescore
  53. 2026-08-04 15:19 UTCEG score recompute
  54. 2026-08-04 15:10 UTCEPSS rescore
  55. 2026-08-04 10:39 UTCEPSS rescore
  56. 2026-08-03 20:41 UTCEG score recompute
  57. 2026-08-03 10:36 UTCEPSS rescore
  58. 2026-08-02 06:29 UTCEG score recompute
  59. 2026-08-02 02:27 UTCEPSS rescore
  60. 2026-08-01 05:02 UTCEG score recompute
  61. 2026-08-01 04:16 UTCEPSS rescore
  62. 2026-07-30 22:18 UTCEG score recompute
  63. 2026-07-30 16:28 UTCEPSS rescore
  64. 2026-07-30 02:55 UTCEG score recompute
  65. 2026-07-30 01:30 UTCEPSS rescore
  66. 2026-07-29 01:35 UTCEG score recompute
  67. 2026-07-28 15:37 UTCEPSS rescore
  68. 2026-07-27 21:21 UTCEG score recompute
  69. 2026-07-26 16:49 UTCEG score recompute
  70. 2026-07-26 14:54 UTCEPSS rescore
  71. 2026-07-25 14:18 UTCEPSS rescore
  72. 2026-07-24 14:18 UTCEPSS rescore
  73. 2026-07-23 14:18 UTCEPSS rescore
  74. 2026-07-23 03:19 UTCEG score recompute
  75. 2026-07-22 14:08 UTCEPSS rescore

Related CVEs(same product + same CWE)

Same product

2 shown

PyPI:jupyterlab-git

Frequently asked(5)

What is CVE-2026-54528?
CVE-2026-54528 is a high vulnerability published on June 19, 2026. JupyterLab Git is a Git extension for JupyterLab. Prior to 0.54.0, jupyterlab-git uses fnmatch.fnmatchcase() in GitHandler.prepare() in jupyterlabgit/handlers.py to enforce excludedpaths, allowing an authenticated user on a case-insensitive filesystem to vary URL path casing and read excluded…
When was CVE-2026-54528 disclosed?
CVE-2026-54528 was first published on June 19, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54528 actively exploited?
CVE-2026-54528 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-54528?
CVE-2026-54528 has a CVSS base score of 7.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-54528?
A fix for CVE-2026-54528 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-54528 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-54528

Explore →

Is Your Infrastructure Affected by CVE-2026-54528?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs