How severe is CVE-2020-26564?

CVE-2020-26564 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-26564 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-26564?

CVE-2020-26564 affects Objectplanet Opinio. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-26564?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-26564 published?

CVE-2020-26564 was published on 2021-07-31 and last updated on 2026-06-17.

CVE-2020-26564

CVE-2020-26564 is a medium-severity vulnerability in Objectplanet Opinio with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-611.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-611
Affected product: Objectplanet Opinio
Published: 2021-07-31
Last modified: 2026-06-17

Description

ObjectPlanet Opinio before 7.15 allows XXE attacks via three steps: modify a .css file to have <!ENTITY content, create a .xml file for a generic survey template (containing a link to this .css file), and import this .xml file at the survey/admin/folderSurvey.do?action=viewImportSurvey['importFile'] URI. The XXE can then be triggered at a admin/preview.do?action=previewSurvey&surveyId= URI.

Frequently asked questions

What is CVE-2020-26564?: ObjectPlanet Opinio before 7.15 allows XXE attacks via three steps: modify a .css file to have <!ENTITY content, create a .xml file for a generic survey template (containing a link to this .css file), and import this .xml file at the survey/admin/folderSurvey.do?action=viewImportSurvey['importFile'] URI. The XXE can then be triggered at a admin/preview.do?action=previewSurvey&surveyId= URI.
How severe is CVE-2020-26564?: CVE-2020-26564 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-26564 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-26564?: CVE-2020-26564 affects Objectplanet Opinio. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-26564?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-26564 published?: CVE-2020-26564 was published on 2021-07-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:objectplanet:opinio:*:*:*:*:*:*:*:*

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