CVE-2023-0289 — Cross-site Scripting (XSS) - Stored in GitHub repository craigk5n/webcalendar pr

Cross-site Scripting (XSS) - Stored in GitHub repository craigk5n/webcalendar prior to master.

01What is this vulnerability?

Cross-site Scripting (XSS) - Stored in GitHub repository craigk5n/webcalendar prior to master.

02Affected products

Vendor	Product	Versions
craigk5n	craigk5n/webcalendar	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

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: 2023-01-13T00:00:00.000Z
• Last modified: 2025-04-07T15:34:55.082Z

09References

• huntr.dev — https://huntr.dev/bounties/b9584c87-60e8-4a03-9e79-5f1e2d595361
• github.com — https://github.com/craigk5n/webcalendar/commit/7906b4924c2dc3727c3540682f432ebbb…