XSS in Plone
CVE-2022-23599
Products.ATContentTypes are the core content types for Plone 2.1 - 4.3. Versions of Plone that are dependent on Products.ATContentTypes prior to version 3.0.6 are vulnerable to reflected cross site scripting and open redirect when an attacker can get a compromised version of the image_view_fullscreen page in a cache, for example in Varnish. The technique is known as cache poisoning. Any later visitor can get redirected when clicking on a link on this page. Usually only anonymous users are affected, but this depends on the user's cache settings. Version 3.0.6 of Products.ATContentTypes has been released with a fix. This version works on Plone 5.2, Python 2 only. As a workaround, make sure the image_view_fullscreen page is not stored in the cache. More information about the vulnerability and cvmitigation measures is available in the GitHub Security Advisory.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.007 (53.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/plone/Products.ATContentTypes/security/advisories/GHSA-g4c2-ghfg-g5rh (Third Party Advisory)
- github.com/plone/Products.ATContentTypes/commit/fc793f88f35a15a68b52e4abed77af0… (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-23599?
- CVE-2022-23599 is a medium-severity vulnerability in Plone, classified under Cross-site Scripting. CVSS score: 4.3/10. Published 2022-01-28.
- How severe is CVE-2022-23599?
- Medium severity. CVSS v3 base score is 4.3 out of 10.