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Medium severity4.3NVD Advisory· Published May 21, 2021· Updated Jun 17, 2026

CVE-2021-33510

CVE-2021-33510

Description

Plone through 5.2.4 allows remote authenticated managers to conduct SSRF attacks via an event ical URL, to read one line of a file.

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	<= 5.2.4	—

Affected products

3

Plone (software)/Plone
cpe:2.3:a:plone:plone:*:*:*:*:*:*:*:*
Range: <=5.2.4
Plone/Plonedescription
ghsa-coords
pkg:pypi/plone
Range: <= 5.2.4

Patches

Vulnerability mechanics

References

5

www.openwall.com/lists/oss-security/2021/05/22/1nvdMailing ListThird Party AdvisoryWEB
github.com/advisories/GHSA-4mg4-wvmx-5332ghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2021-33510ghsaADVISORY
plone.org/security/hotfix/20210518/server-side-request-forgery-via-event-ical-urlnvdVendor AdvisoryWEB
github.com/pypa/advisory-database/tree/main/vulns/plone/PYSEC-2021-82.yamlghsaWEB

News mentions

0

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