Is CVE-2021-3991 in the CISA KEV catalog?

No. CVE-2021-3991 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-3991?

CVE-2021-3991 has a CVSS v3 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2021-3991?

CVE-2021-3991 has an EPSS score of 0.31% (23th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-3991?

Upgrade dolibarr erp\/crm to 20.0.2 or later.

CVE & CISA-KEV Catalog

CVE-2021-3991

MEDIUM

4.3

CVSS v3

NVD

Description

An Improper Authorization vulnerability exists in Dolibarr versions prior to the 'develop' branch. A user with restricted permissions in the 'Reception' section is able to access specific reception details via direct URL access, bypassing the intended permission restrictions.

CWE-285 CWE-639Authorization Bypass Through User-Controlled Key

How to fix

Remediation Available

dolibarr erp\/crmNVD

Affected:< 20.0.2Fixed in:20.0.2CVE-2021-3991derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Exploit Intelligence

0.31%probability of exploitation in 30 days

23rdpercentile

Low risk: more likely to be exploited than 23% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory1

huntr.com

Related Vulnerabilities

Other CWE-285 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-29927	Critical	9.1	100%	-	Fix
CVE-2021-28799	Critical	10.0	78%	KEV + Ransom	Fix
CVE-2023-32707	High	8.8	74%	-	Fix
CVE-2023-48241	High	7.5	73%	-	Fix
CVE-2023-22480	High	7.3	67%	-	Fix
CVE-2022-3229	Critical	9.8	66%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-19.