CVE-2023-34103 — Avo is an open source ruby on rails admin panel creation framework

Avo is an open source ruby on rails admin panel creation framework. In affected versions some avo fields are vulnerable to Cross Site Scripting (XSS) when rendering html based content. Attackers do need form edit privilege in order to successfully exploit this vulnerability, but

01What is this vulnerability?

Avo is an open source ruby on rails admin panel creation framework. In affected versions some avo fields are vulnerable to Cross Site Scripting (XSS) when rendering html based content. Attackers do need form edit privilege in order to successfully exploit this vulnerability, but the results are stored and no specific timing is required. This issue has been addressed in commit `7891c01e` which is…

02Affected products

Vendor	Product	Versions
avo-hq	avo	<= 2.33.2, >= 3.0.0.pre1, <= 3.0.0.pre12

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: 2023-06-05T22:13:21.458Z
• Last modified: 2025-01-08T15:49:17.811Z

09References

• github.com — https://github.com/avo-hq/avo/security/advisories/GHSA-5cr9-5jx3-2g39
• github.com — https://github.com/avo-hq/avo/commit/7891c01e1fba9ca5d7dbccc43d27f385e5d08563