High 7.8Published Oct 4, 2026

CVE-2026-105220Twine 2 Desktop through 2.12.0 Arbitrary Code Execution via Imported Story Files

Updated under an hour ago (2026-10-19 09:50 UTC)

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It affects klembot twinejs. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.15%, higher than 4% of scored CVEs.

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Every CVE for klembot twinejs

Exploited in the last 30 days

Twine 2 desktop through 2.12.0 contains a cross-site scripting vulnerability in importStories() that executes markup from imported story files in the editor window. Attackers can craft a story file whose script calls the twineElectron openWithScratchFile IPC bridge to write and open a .bat file, executing code as the user.

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.15% (percentile 4)
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

klembot twinejs klembot:twinejs (from the name)	through 2.12.0	CNA record

References

https://github.com/klembot/twinejs/issues/1706issue-tracking
https://github.com/klembot/twinejsproduct
https://github.com/klembot/twinejs/blob/2.12.0/src/util/import.ts#L134-L136technical-description
https://github.com/klembot/twinejs/blob/2.12.0/src/electron/main-process/scratch-file.ts#L57-L63technical-description
https://github.com/klembot/twinejs/commit/8e8a2bef5b1e20c58b99d22a2a4d8d867fb421cbpatch
https://github.com/klembot/twinejs/commit/3a9af28cabe9684730beb8b578132cad9bb5bc60patch
https://www.vulncheck.com/advisories/twine-2-desktop-through-2.12.0-arbitrary-code-execution-via-imported-story-filesthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.