CVE-2026-105783

HIGHPre-NVD 8.08.0—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1% (3rd percentile of EPSS-scored CVEs). 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 week
8.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 8.0Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.13, when Joplin Desktop is running with the opt-in Web Clipper server enabled, the server in packages/lib/ClipperServer.ts sends Access-Control-Allow-Origin: * and allows an arbitrary website to call POST /auth and GET /auth/check because the pairing endpoints do not reject HTTP or HTTPS origins. The desktop confirmation dialog does not identify the requesting origin, so a victim who approves the generic prompt authorizes the attacking page, which then receives the permanent API token. The token provides ongoing read and write access to notes, folders, tags, resources, and master keys. This issue is fixed in version 3.7.13.

CVSS v3
8.0
EG Score
8.0HIGHmedium confidence
EG Risk
36
EG Risk 36/100CISA SSVC

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
Severity80% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
3rd
KEV
Not listed

CISA SSVCTrack 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). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

October 5, 2026

Last Modified

October 6, 2026

Advisory Details (4)

Auto-updated Oct 5, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_release, github, github_pr.
github_release Patch Available

v3.7.13

Patch available: laurent22/joplin v3.7.13 (pre-release)

https://github.com/laurent22/joplin/releases/tag/v3.7.13
github_commit

commit 27ae5c0d404e (laurent22/joplin)

Fix landed in laurent22/joplin commit 27ae5c0d404e — awaiting tagged release

https://github.com/laurent22/joplin/commit/27ae5c0d404ee47ad24862cce917dda6eb2930b7
github_pr

Desktop: Restrict Web Clipper pairing to extension origins

Fix merged in laurent22/joplin PR #16276 on 2026-08-22 — awaiting tagged release

https://github.com/laurent22/joplin/pull/16276
githubMentions a patch (unverified)🟡 PoC Available

Any website open in the browser can trigger and win Joplin's Web Clipper pairing dialog, stealing the permanent full-access API token, because the local server has no Origin/Referer restriction and the confirmation dialog shows no identifying information · Advisory · laurent22/joplin · GitHub

https://github.com/laurent22/joplin/security/advisories/GHSA-9728-v7ww-mxjv

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 12× 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. 2026-10-09 20:56 UTCEG score recompute
  2. 2026-10-09 20:06 UTCEPSS rescore
  3. 2026-10-08 22:51 UTCEG score recompute
  4. 2026-10-08 17:11 UTCEPSS rescore
  5. 2026-10-08 00:36 UTCEG score recompute
  6. 2026-10-07 23:47 UTCEPSS rescore
  7. 2026-10-06 15:32 UTCEG score recompute
  8. 2026-10-06 15:17 UTCEPSS rescore
  9. 2026-10-06 14:55 UTCEG score recompute
  10. 2026-10-06 00:26 UTCEG score recompute
  11. 2026-10-05 23:27 UTCEG score recompute
  12. 2026-10-05 23:25 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-105783?
CVE-2026-105783 is a high vulnerability published on October 5, 2026. Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.13, when Joplin Desktop is running with the opt-in Web Clipper server enabled, the server in packages/lib/ClipperServer.ts sends Access-Control-Allow-Origin: * and allows an…
When was CVE-2026-105783 disclosed?
CVE-2026-105783 was first published on October 5, 2026, with the most recent update on October 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-105783 actively exploited?
CVE-2026-105783 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (3rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-105783?
CVE-2026-105783 has a CVSS base score of 8.0 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-105783?
A fix for CVE-2026-105783 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-2026-105783

Explore →

Is Your Infrastructure Affected by CVE-2026-105783?

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

Book a Demo →Browse All CVEs