CVE-2020-28735

mediumpriority · track · 36EPSS 0.015 · 73 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.45% (73rd) EPSS

CVSS 6.5 · medium

Is it mine?

7 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

Plone before 5.2.3 allows SSRF attacks via the tracebacks feature (only available to the Manager role).

cvss

Technical severity, 0–10. One row per scoring source.

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–8.8

v2.06.5mediumAV:N/AC:L/Au:S/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8 · impact 6.4

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · OSV

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-918USprimaryCWE-918US

affected products (7)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
plone plone< 5.2.3nvdUScpe:2.3:a:plone:plone:*:*:*:*:*:*:*:*
PyPI plone< 5.2.3osvUSpkg:pypi/plone
PyPI plone-app-dexterity< 2.6.8osvUSpkg:pypi/plone-app-dexterity
PyPI plone-app-event< 3.2.10osvUSpkg:pypi/plone-app-event
PyPI plone-app-theming< 4.1.6osvUSpkg:pypi/plone-app-theming
PyPI plone-supermodel< 1.6.3osvUSpkg:pypi/plone-supermodel

advisories (6)

Vendor and ecosystem advisories describing this.

GHSA-x7wf-5mjc-6x76SSRF attacks via tracebacks in Plone2021-04-07ghsa · osvUS
Plone before 5.2.3 allows SSRF attacks via the tracebacks feature (only available to the Manager role).
PYSEC-2020-2472020-12-30vendor · osvUS
Plone before 5.2.3 allows SSRF attacks via the tracebacks feature (only available to the Manager role).
PYSEC-2026-2881SSRF attacks via tracebacks in Plone2026-07-09vendor · osvUS
Plone before 5.2.3 allows SSRF attacks via the tracebacks feature (only available to the Manager role).
PYSEC-2026-2884SSRF attacks via tracebacks in Plone2026-07-09vendor · osvUS
Plone before 5.2.3 allows SSRF attacks via the tracebacks feature (only available to the Manager role).
PYSEC-2026-2887SSRF attacks via tracebacks in Plone2026-07-09vendor · osvUS
Plone before 5.2.3 allows SSRF attacks via the tracebacks feature (only available to the Manager role).
PYSEC-2026-737SSRF attacks via tracebacks in Plone2026-07-02vendor · osvUS
Plone before 5.2.3 allows SSRF attacks via the tracebacks feature (only available to the Manager role).

also known as (14)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv nvd NVD CVE.org MITRE

published 2020-12-30modified 2026-06-17

related (4,186)

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+4181 more

references (10)

External citations — patches, advisories, analysis.

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