CVE-2021-33511

unknown

Published 2021-06-15 · Modified 2023-11-08

CVSS v3

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CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v2

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VIR risk

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Description

Plone though 5.2.4 allows SSRF via the lxml parser. This affects Diazo themes, Dexterity TTW schemas, and modeleditors in plone.app.theming, plone.app.dexterity, and plone.supermodel.

Predictions

Exploit likelihood

30%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No vendor mitigations ingested yet for this CVE. The mitigation-content worker queues fetches as references arrive — check back in a few minutes, or see the references list below.

Package impact

Ecosystem	Package	Vulnerable	Fixed
PyPI	plone	`<=5.2.4`
PyPI	plone	`<5.2.5`	`5.2.5`

References

https://nvd.nist.gov/vuln/detail/CVE-2021-33511
https://github.com/advisories/GHSA-gc9g-67cq-p7v4
https://github.com/plone/Plone
https://github.com/pypa/advisory-database/tree/main/vulns/plone/PYSEC-2021-83.yaml
https://plone.org/security/hotfix/20210518/server-side-request-forgery-via-lxml-parser
http://www.openwall.com/lists/oss-security/2021/05/22/1

Verify integrity in audit chain (admin only). AS-IS.