JupyterLab Desktop is the cross-platform desktop application for JupyterLab. Prior to 4.6.2-1, remote-server URLs were inserted into the server-selection dialog and Welcome view without safe encoding. An attacker who convinces a user to submit a crafted URL can execute JavaScript in the Welcome renderer and abuse its privileged IPC bridge to execute arbitrary code with the user’s privileges. The Welcome view also unsafely renders RSS news-feed titles; exploitation through this separate input path requires control over content delivered through the application’s Jupyter Blog feed or its cached feed data, rather than submission of a remote-server URL. This issue affects all supported platforms and is fixed in version 4.6.2-1.
CVE-2026-102530
CRITICALPre-NVD 9.49.4
EchelonGraph scoreMEDIUM confidence
“—” beside the score: it is equal to the CVSS score beside it.
This critical-severity CVE scores 9.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (36th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Also known asEUVD-2026-118462 (ENISA EUVD)Source: ENISA EUVD
9.4EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 9.4Exploit: None knownExposed services: Not assessed
A fix is available — apply it.
- CVSS
- 9.4
- EG Score
- 9.4CRITICALmedium confidence
- EG Risk
- 42EG Risk 42/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity94% × 45%Impact severity (EG Severity): CVSS 9.4 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation0.4% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 0.4%
- EPSS %ILE
- 36th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (9.4): severity, escalated by confirmed exploitation. This CVE's 9.4 is its impact severity (EG Severity), not escalated.
- EG Severity
- 9.4 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source
- EG Likelihood
- 0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
November 6, 2026
Last Modified
November 12, 2026
Advisory Details (3)
Auto-updated Nov 6, 2026Patch available. Sources: github, github_commit, github_release.
GitHub release Patch Available
v4.6.2-1
Patch available: jupyterlab/jupyterlab-desktop v4.6.2-1
https://github.com/jupyterlab/jupyterlab-desktop/releases/tag/v4.6.2-1GitHub commit
commit f59fd4f61bc6 (jupyterlab/jupyterlab-desktop)
Fix landed in jupyterlab/jupyterlab-desktop commit f59fd4f61bc6 — awaiting tagged release
https://github.com/jupyterlab/jupyterlab-desktop/commit/f59fd4f61bc6a2ca89cf0d13dce5f60511eaef5dGitHub advisoryMentions a patch (unverified)
JupyterLab Desktop: pasting a malicious server URL into the connect dialog can lead to remote code execution (XSS) · Advisory · jupyterlab/jupyterlab-desktop · GitHub
Affected: v4.6.2-1 by replacing
https://github.com/jupyterlab/jupyterlab-desktop/security/advisories/GHSA-vrj4-r4fw-9rfhWeakness Classification(3)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 8× in last 7d / 9× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.
- 2026-11-13 16:50 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-11-12 22:28 UTCEchelonGraph re-scored
- 2026-11-12 16:32 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-11-12 01:30 UTCEchelonGraph re-scored
- 2026-11-11 16:37 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-11-10 23:00 UTCEchelonGraph re-scored
- 2026-11-10 16:41 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-11-09 23:47 UTCEchelonGraph re-scored
- 2026-11-09 22:50 UTCEchelonGraph re-scored
- 2026-11-09 18:34 UTCEchelonGraph re-scored
- 2026-11-09 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-11-08 19:32 UTCEchelonGraph re-scored
- 2026-11-08 16:37 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-11-07 20:30 UTCEchelonGraph re-scored
- 2026-11-07 16:37 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-11-06 21:27 UTCEchelonGraph re-scored
- 2026-11-06 21:04 UTCENISA EUVD ID recordedEUVD-2026-118462 · Source: ENISA EUVD
- 2026-11-06 20:42 UTCEchelonGraph re-scoredFirst assessed: 9.4 CRITICAL
- 2026-11-06 20:41 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Same CWE
10 shownCWE-116 · CWE-94 · CWE-79
Frequently asked(5)
What is CVE-2026-102530?
CVE-2026-102530 is a critical-severity vulnerability; its CVE record was published on November 6, 2026. JupyterLab Desktop is the cross-platform desktop application for JupyterLab. Prior to 4.6.2-1, remote-server URLs were inserted into the server-selection dialog and Welcome view without safe encoding. An attacker who convinces a user to submit a crafted URL can execute JavaScript in the Welcome…
When was the CVE record for CVE-2026-102530 published?
The CVE record for CVE-2026-102530 was published on November 6, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of November 12, 2026; the record at its source may have been updated since.
Is CVE-2026-102530 actively exploited?
CVE-2026-102530 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (36th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-102530?
CVE-2026-102530 has a CVSS base score of 9.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-102530?
A fix for CVE-2026-102530 is available: update to the fixed version the vendor names in its advisory.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-102530
Is Your Infrastructure Affected by CVE-2026-102530?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.