CVE-2020-18336: Cross Site Scripting (XSS) vulnerability found in Typora v.0.9.65 allows a remote attacker to obtain sensitive

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HIGH 7.4DOWNGRADE

CVE-2020-18336 is a high-severity flaw (CVSS 7.4) affecting typora. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross Site Scripting (XSS) vulnerability found in Typora v.0.9.65 allows a remote attacker to obtain sensitive information via the PDF file exporting function.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.4 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-10-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: typora

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

Am I affected?

Timeline

2023-10-10 03:15 UTCPublished CVE record published
2026-06-17 02:59 UTCUpdated Record last modified

typora typora DOWNGRADE

Affected: 0.9.65

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.9.65

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.9.65 (Debian / Ubuntu)

apt-cache madison typora sudo apt install typora=<VERSION_BEFORE_0.9.65> sudo apt-mark hold typora

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list typora sudo dnf downgrade typora-<VERSION_BEFORE_0.9.65> sudo dnf versionlock add typora

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2020-18336?

typora: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-18336 being exploited?

CVE-2020-18336 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-2020-18336 affect?

CVE-2020-18336 affects typora. Severity is high (CVSS 7.4). Cross Site Scripting (XSS) vulnerability found in Typora v.0.9.65 allows a remote attacker to obtain sensitive information via the PDF file exporting function.

How urgent is CVE-2020-18336?

Priority 44/100. High severity; Public exploit reference

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References

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