CVE-2026-22810

HIGHNVD 7.37.3—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.3 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 89% 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, nvd
Elevated
7.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.3Exploit: Elevated riskExposed 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. Versions prior to 3.5.7 contain a path traversal vulnerability in the importer which allows overwriting arbitrary files on disk. The OneNote converter does not sanitize the names of embedded files before writing them to disk. As a result, it's possible for an attacker to create a malicious .one file that includes file names containing ../../, that are then interpreted as part of the target path when extracting attachments from the .one file. This issue has been patched in version 3.5.7.

CVSS v3
7.3
EG Score
7.3HIGHmedium confidence
EG Risk
49
EG Risk 49/100

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
Severity73% × 45%
Exploitation40% × 40%
Automatability0% × 15%
EPSS PROB
0.2%
EPSS %ILE
9th
KEV
Not listed

Published

May 18, 2026

Last Modified

July 24, 2026

Advisory Details (5)

Auto-updated May 19, 2026
🔬 Proof of concept available. Patch available. Sources: github.
githubMentions a patch (unverified)🟡 PoC Available

Path traversal in OneNote importer allows overwriting arbitrary files · Advisory · laurent22/joplin · GitHub

https://github.com/laurent22/joplin/security/advisories/GHSA-gcmj-c9gg-9vh6
generic

Release v3.5.7 · laurent22/joplin · GitHub

https://github.com/laurent22/joplin/releases/tag/v3.5.7
generic

Desktop: Resolves #13464: OneNote importer: Don't stop the import process when a page fails to render by personalizedrefrigerator · Pull Request #13736 · laurent22/joplin · GitHub

https://github.com/laurent22/joplin/pull/13736
generic

Desktop: Resolves #13464: OneNote importer: Don't stop the import pro… · laurent22/joplin@7916684 · GitHub

https://github.com/laurent22/joplin/commit/791668455e1aae50501ff57ea4783b3fba9d377c
generic

joplin/packages/onenote-converter/renderer/src/page/embedded_file.rs at af5108d70233b1db9410346958c1587cf7c1b16d · laurent22/joplin · GitHub

https://github.com/laurent22/joplin/blob/af5108d70233b1db9410346958c1587cf7c1b16d/packages/onenote-converter/renderer/src/page/embedded_file.rs#L13-L16

Vendor Advisories for CVE-2026-22810(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)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
@joplin/onenote-converter—
  • every version up to 3.5.7: fixed in 3.5.7
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 24× 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 192 total refreshes for this CVE.

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Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-22810?
CVE-2026-22810 is a high vulnerability published on May 18, 2026. Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Versions prior to 3.5.7 contain a path traversal vulnerability in the importer which allows overwriting arbitrary files on disk. The OneNote converter does not sanitize the names of embedded…
When was CVE-2026-22810 disclosed?
CVE-2026-22810 was first published on May 18, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-22810 actively exploited?
CVE-2026-22810 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (9th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-22810?
CVE-2026-22810 has a CVSS v3 base score of 7.3 (NVD).
How do I remediate CVE-2026-22810?
A fix for CVE-2026-22810 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-22810 are linked in the Vendor Advisories panel on this page.

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