CVE-2023-0643 — Improper Handling of Additional Special Element in GitHub repository squidex/squ

Improper Handling of Additional Special Element in GitHub repository squidex/squidex prior to 7.4.0.

01What is this vulnerability?

Improper Handling of Additional Special Element in GitHub repository squidex/squidex prior to 7.4.0.

02Affected products

Vendor	Product	Versions
squidex	squidex/squidex	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: 2023-02-02T00:00:00.000Z
• Last modified: 2025-03-26T17:45:04.382Z

09References

• huntr.dev — https://huntr.dev/bounties/ea90f8b9-d8fe-4432-9a52-4d663400c52f
• github.com — https://github.com/squidex/squidex/commit/cf4efc52eab17098474d73ccff6c136fc2f737…