CVE-2023-38490 — Kirby is a content management system

Kirby is a content management system. A vulnerability in versions prior to 3.5.8.3, 3.6.6.3, 3.7.5.2, 3.8.4.1, and 3.9.6 only affects Kirby sites that use the `Xml` data handler (e.g. `Data::decode($string, 'xml')`) or the `Xml::parse()` method in site or plugin code. T

01What is this vulnerability?

Kirby is a content management system. A vulnerability in versions prior to 3.5.8.3, 3.6.6.3, 3.7.5.2, 3.8.4.1, and 3.9.6 only affects Kirby sites that use the `Xml` data handler (e.g. `Data::decode($string, 'xml')`) or the `Xml::parse()` method in site or plugin code. The Kirby core does not use any of the affected methods.

02Affected products

Vendor	Product	Versions
getkirby	kirby	< 3.5.8.3, >= 3.6.0, < 3.6.6.3, >= 3.7.0, < 3.7.5.2, >= 3.8.0, < 3.8.41, >= 3.9.0, < 3.9.6

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: 2023-07-27T14:46:49.403Z
• Last modified: 2024-10-16T20:31:01.108Z

09References

• github.com — https://github.com/getkirby/kirby/security/advisories/GHSA-q386-w6fg-gmgp
• github.com — https://github.com/getkirby/kirby/commit/277b05662d2b67386f0a0f18323cf68b30e8638…
• github.com — https://github.com/getkirby/kirby/releases/tag/3.5.8.3
• github.com — https://github.com/getkirby/kirby/releases/tag/3.6.6.3
• github.com — https://github.com/getkirby/kirby/releases/tag/3.7.5.2
• github.com — https://github.com/getkirby/kirby/releases/tag/3.8.4.1
• github.com — https://github.com/getkirby/kirby/releases/tag/3.9.6