CVE-2023-2318: DOM-based XSS in src/muya/lib/contentState/pasteCtrl.js in MarkText 0.17.1 and before on Windows, Linux and ma

Q: How do I fix CVE-2023-2318?

marktext: upgrade to newer than 0.17.1. Exact commands for each OS are on this page.

Q: Is CVE-2023-2318 being exploited?

CVE-2023-2318 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-2318 affect?

CVE-2023-2318 affects marktext. Severity is high (CVSS 8.6). DOM-based XSS in src/muya/lib/contentState/pasteCtrl.js in MarkText 0.17.1 and before on Windows, Linux and macOS allows arbitrary JavaScript code to run in the context of MarkText main window. This vulnerability can be exploited if a user

Q: How urgent is CVE-2023-2318?

Priority 51/100. High severity; Public exploit reference; On your watchlist

This month

HIGH 8.6WATCHLISTUPGRADE

CVE-2023-2318 is a high-severity flaw (CVSS 8.6) affecting marktext. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

DOM-based XSS in src/muya/lib/contentState/pasteCtrl.js in MarkText 0.17.1 and before on Windows, Linux and macOS allows arbitrary JavaScript code to run in the context of MarkText main window. This vulnerability can be exploited if a user copies text from a malicious webpage and paste it into MarkText.

Why this priority

High severity
Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	8.6 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 55%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-08-19
Last modified	2026-06-17

Publisher (CNA): STAR Labs SG Pte. Ltd. · Vendor: marktext

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-08-19 06:15 UTCPublished CVE record published
2026-06-17 05:52 UTCUpdated Record last modified

marktext marktext UPGRADE

Affected: <= 0.17.1

Fixed in: newer than 0.17.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy marktext || rpm -q marktext || marktext --version

2. UPGRADE to newer than 0.17.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade marktext

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade marktext

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-2318?

marktext: upgrade to newer than 0.17.1. Exact commands for each OS are on this page.

Is CVE-2023-2318 being exploited?

CVE-2023-2318 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-2318 affect?

CVE-2023-2318 affects marktext. Severity is high (CVSS 8.6). DOM-based XSS in src/muya/lib/contentState/pasteCtrl.js in MarkText 0.17.1 and before on Windows, Linux and macOS allows arbitrary JavaScript code to run in the context of MarkText main window. This vulnerability can be exploited if a user

How urgent is CVE-2023-2318?

Priority 51/100. High severity; Public exploit reference; On your watchlist

Software pages

Windows vulnerabilities · macOS vulnerabilities

Related CVEs

CVE-2023-1004 MEDIUM 5.3 UPGRADE A vulnerability has been found in MarkText up to 0.17.1 on Windows and classified as critical

References

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