High severity8.8NVD Advisory· Published Feb 17, 2023· Updated Jun 17, 2026
CVE-2021-33926
CVE-2021-33926
Description
An issue in Plone CMS v. 5.2.4, 5.2.3, 5.2.2, 5.2.1, 5.2.0, 5.1rc2, 5.1rc1, 5.1b4, 5.1b3, 5.1b2, 5.1a2, 5.1a1, 5.1.7, 5.1.6, 5.1.5, 5.1.4, 5.1.2, 5.1.1 5.1, 5.0rc3, 5.0rc2, 5.0rc1, 5.0.9, 5.0.8, 5.0.7, 5.0.6, 5.0.5, 5.0.4, 5.0.3, 5.0.2, 5.0.10, 5.0.1, 5.0, 4.3.9, 4.3.8, 4.3.7, 4.3.6, 4.3.5, 4.3.4, 4.3.3, 4.3.20, 4 allows attacker to access sensitive information via the RSS feed protlet.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
PlonePyPI | >= 4.3, < 5.2.5 | 5.2.5 |
Affected products
54cpe:2.3:a:plone:plone:4.3.10:*:*:*:*:*:*:*+ 51 more
- cpe:2.3:a:plone:plone:4.3.10:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:4.3.11:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:4.3.12:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:4.3.14:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:4.3.15:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:4.3.17:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:4.3.18:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:4.3.19:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:4.3.1:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:4.3.20:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:4.3.2:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:4.3.3:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:4.3.4:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:4.3.5:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:4.3.6:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:4.3.7:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:4.3.8:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:4.3.9:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:4.3:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.0.10:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.0.2:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.0.3:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.0.4:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.0.5:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.0.6:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.0.7:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.0.8:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.0.9:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.0:-:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.0:rc1:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.0:rc2:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.0:rc3:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.1.2:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.1.4:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.1.5:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.1.6:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.1.7:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.1:alpha2:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.1a1:alpha1:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.1a2:beta4:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.1b2:beta3:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.1b3:beta2:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.1b4:rc2:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.1rc1:rc1:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.1rc2:-:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.2.0:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.2.1:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.2.2:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.2.3:*:*:*:*:*:*:*
- cpe:2.3:a:plone:plone:5.2.4:*:*:*:*:*:*:*
- Plone CMS/Plone CMSdescription
Patches
Vulnerability mechanics
References
6- github.com/s-kustm/Subodh/blob/master/Plone%205.2.4%20Vulnerable%20to%20bilend%20SSRF.pdfnvdExploitThird Party AdvisoryWEB
- github.com/advisories/GHSA-47p5-p3jw-w78wghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2021-33926ghsaADVISORY
- plone.org/security/hotfix/20210518/blind-ssrf-via-feedparser-accessing-an-internal-urlnvdVendor AdvisoryWEB
- github.com/pypa/advisory-database/tree/main/vulns/plone/PYSEC-2023-289.yamlghsaWEB
- plone.org/security/hotfix/20210518nvdRelease NotesWEB
News mentions
0No linked articles in our index yet.