What is CVE-2021-33510?

CVE-2021-33510 is a medium-severity vulnerability in Plone, classified under Server-Side Request Forgery (SSRF). CVSS score: 4.3/10. Published 2021-05-21.

How severe is CVE-2021-33510?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Is CVE-2021-33510 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

SSRF in Plone

CVE-2021-33510

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.

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.010 (57.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Plone
N/a — versions n/a

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

Public proof-of-concept exploits

cyllective/CVEs

References

cve@mitre.org (x_refsource_MISC, Vendor Advisory)
cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2021-33510?: CVE-2021-33510 is a medium-severity vulnerability in Plone, classified under Server-Side Request Forgery (SSRF). CVSS score: 4.3/10. Published 2021-05-21.
How severe is CVE-2021-33510?: Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2021-33510 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.