How severe is CVE-2021-28060?

CVE-2021-28060 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-28060 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-28060?

CVE-2021-28060 affects Group-office Group Office. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-28060?

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

When was CVE-2021-28060 published?

CVE-2021-28060 was published on 2021-04-14 and last updated on 2026-06-17.

CVE-2021-28060

CVE-2021-28060 is a medium-severity vulnerability in Group-office Group Office with a CVSS 3.x base score of 5.3. 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-918.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Group-office Group Office
Published: 2021-04-14
Last modified: 2026-06-17

Description

A Server-Side Request Forgery (SSRF) vulnerability in Group Office 6.4.196 allows a remote attacker to forge GET requests to arbitrary URLs via the url parameter to group/api/upload.php.

Frequently asked questions

What is CVE-2021-28060?: A Server-Side Request Forgery (SSRF) vulnerability in Group Office 6.4.196 allows a remote attacker to forge GET requests to arbitrary URLs via the url parameter to group/api/upload.php.
How severe is CVE-2021-28060?: CVE-2021-28060 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-28060 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-28060?: CVE-2021-28060 affects Group-office Group Office. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-28060?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-28060 published?: CVE-2021-28060 was published on 2021-04-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:group-office:group_office:6.4.196:*:*:*:*:*:*:*

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