CVE-2026-49450

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: 0.2%, top 93% 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
Trending — 3 sources updated this weekElevated
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%CVSS: 7.1Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.2, Joplin Desktop for Windows omits publisherName from packages/app-desktop/package.json, so the generated app-update.yml causes NsisUpdater.verifySignature() to skip comparison of a downloaded update's Authenticode signer with Joplin's signer. An attacker who controls the update delivery path can replace the update metadata and installer, and the client accepts an installer signed by another publisher or left unsigned after the user approves installation. Successful exploitation runs attacker-controlled code with the user's privileges and can compromise notes, credentials, and local data. This issue is fixed in version 3.7.2.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
48(Track*)
EG Risk 48/100SSVC: Track*

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%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
7%
KEV
Not listed

Published

September 21, 2026

Last Modified

September 23, 2026

Advisory Details (3)

Auto-updated Sep 21, 2026
Patch available. Sources: github_commit, github_pr, github.
github Patch Available

Joplin desktop Windows auto-updater accepts signed installer from any publisher because app-update.yml has no publisherName · Advisory · laurent22/joplin · GitHub

https://github.com/laurent22/joplin/security/advisories/GHSA-9wp7-hr9m-3273
github_pr

Desktop: Set Windows publisher name for installer verification

Fix merged in laurent22/joplin PR #15539 on 2026-05-27 — awaiting tagged release

https://github.com/laurent22/joplin/pull/15539
github_commit

commit 853659edf575 (laurent22/joplin)

Fix landed in laurent22/joplin commit 853659edf575 — awaiting tagged release

https://github.com/laurent22/joplin/commit/853659edf575c4f526c2b196e0629462aee9df28

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 9× 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.

  1. 2026-09-24 16:21 UTCEG score recompute
  2. 2026-09-23 18:39 UTCEG score recompute
  3. 2026-09-23 17:53 UTCEPSS rescore
  4. 2026-09-23 01:12 UTCEG score recompute
  5. 2026-09-22 14:20 UTCEG score recompute
  6. 2026-09-22 13:27 UTCEG score recompute
  7. 2026-09-21 21:22 UTCEG score recompute
  8. 2026-09-21 20:58 UTCEG score recompute
  9. 2026-09-21 20:57 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-49450?
CVE-2026-49450 is a high vulnerability published on September 21, 2026. Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.2, Joplin Desktop for Windows omits publisherName from packages/app-desktop/package.json, so the generated app-update.yml causes NsisUpdater.verifySignature() to skip comparison of…
When was CVE-2026-49450 disclosed?
CVE-2026-49450 was first published in the National Vulnerability Database on September 21, 2026, with the most recent update on September 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-49450 actively exploited?
CVE-2026-49450 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 93.2% of all scored CVEs.
What is the CVSS score of CVE-2026-49450?
CVE-2026-49450 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-49450?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-49450, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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