How severe is CVE-2021-35391?

CVE-2021-35391 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-35391 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-35391?

CVE-2021-35391 affects Deskpro. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-35391?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-35391 published?

CVE-2021-35391 was published on 2023-07-21 and last updated on 2026-07-09.

CVE-2021-35391

CVE-2021-35391 is a high-severity vulnerability in Deskpro with a CVSS 3.x base score of 7.2. 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: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Deskpro
Published: 2023-07-21
Last modified: 2026-07-09

Description

Server Side Request Forgery vulnerability found in Deskpro Support Desk v2021.21.6 allows attackers to execute arbitrary code via a crafted URL.

Frequently asked questions

What is CVE-2021-35391?: Server Side Request Forgery vulnerability found in Deskpro Support Desk v2021.21.6 allows attackers to execute arbitrary code via a crafted URL.
How severe is CVE-2021-35391?: CVE-2021-35391 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-35391 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-35391?: CVE-2021-35391 affects Deskpro. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-35391?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-35391 published?: CVE-2021-35391 was published on 2023-07-21 and last updated on 2026-07-09.

References

https://sayaanalam.github.io/CVE-2021-35391.html

Affected products (1)

cpe:2.3:a:deskpro:deskpro:2021.21.6:*:*:*:*:*:*:*

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