CVE-2023-3672 — Cross-site Scripting (XSS) - DOM in GitHub repository plaidweb/webmention

Cross-site Scripting (XSS) - DOM in GitHub repository plaidweb/webmention.js prior to 0.5.5.

01What is this vulnerability?

Cross-site Scripting (XSS) - DOM in GitHub repository plaidweb/webmention.js prior to 0.5.5.

02Affected products

Vendor	Product	Versions
plaidweb	plaidweb/webmention.js	unspecified

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

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

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: 2023-07-14T09:27:32.135Z
• Last modified: 2024-10-22T15:11:30.190Z

09References

• huntr.dev — https://huntr.dev/bounties/75cfb7ad-a75f-45ff-8688-32a9c55179aa
• github.com — https://github.com/plaidweb/webmention.js/commit/3551b66b3e40da37fee89ecf72930c5…