CVE-2022-40011 — Typora through 1

Typora through 1.3.8 allows XSS if a document containing an SVG element with an attacker-controlled onload attribute is exported and then used at a victim's origin.

01What is this vulnerability?

Typora through 1.3.8 allows XSS if a document containing an SVG element with an attacker-controlled onload attribute is exported and then used at a victim's origin.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-12-23T23:15:08.917
• Last modified: 2026-07-09T01:17:42.753

09References

• gist.github.com — https://gist.github.com/wangking1/61bdd1967367301a950ffbb3d10386f3
• typora.io — https://typora.io/releases/all
• gist.github.com — https://gist.github.com/wangking1/61bdd1967367301a950ffbb3d10386f3