CVE-2023-5556 — Cross-site Scripting (XSS) - Reflected in GitHub repository structurizr/onpremis

Cross-site Scripting (XSS) - Reflected in GitHub repository structurizr/onpremises prior to 3194.

01What is this vulnerability?

Cross-site Scripting (XSS) - Reflected in GitHub repository structurizr/onpremises prior to 3194.

02Affected products

Vendor	Product	Versions
structurizr	structurizr/onpremises	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: 2023-10-12T10:32:21.114Z
• Last modified: 2024-09-18T15:58:47.804Z

09References

• huntr.dev — https://huntr.dev/bounties/a3ee0f98-6898-41ae-b1bd-242a03a73d1b
• github.com — https://github.com/structurizr/onpremises/commit/6cff4f792b010dfb1ff6a0b4ae1c6e3…