CVE-2021-35391

HIGHNVD 7.27.2—

7.2

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

CVSS v3: 7.2
EG Score: 7.2(medium)
EPSS: 25.0%
KEV: Not listed

Published

July 21, 2023

Last Modified

November 21, 2024

References (4)

cve@mitrehttp://deskpro.com
cve@mitrehttps://sayaanalam.github.io/CVE-2021-35391.html
af854a3a-2127-422b-91ae-364da2661108http://deskpro.com
af854a3a-2127-422b-91ae-364da2661108https://sayaanalam.github.io/CVE-2021-35391.html

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-918Server-Side Request Forgery (SSRF)

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
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2026-06-01 13:50 UTCepss_batch
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2026-05-27 13:39 UTCepss_batch
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2026-05-26 07:17 UTCepss_batch
2026-05-24 20:48 UTCEG score recompute

Frequently asked(5)

What is CVE-2021-35391?

CVE-2021-35391 is a high vulnerability published on July 21, 2023. Server Side Request Forgery vulnerability found in Deskpro Support Desk v2021.21.6 allows attackers to execute arbitrary code via a crafted URL.

When was CVE-2021-35391 disclosed?

CVE-2021-35391 was first published in the National Vulnerability Database on July 21, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-35391 actively exploited?

CVE-2021-35391 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 25.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-35391?

CVE-2021-35391 has a CVSS v3 base score of 7.2 (NVD).

How do I remediate CVE-2021-35391?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-35391, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-35391

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-35391?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)