How severe is CVE-2021-40884?

CVE-2021-40884 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2021-40884 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40884?

CVE-2021-40884 affects Projectsend. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-40884?

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-2021-40884 published?

CVE-2021-40884 was published on 2021-10-11 and last updated on 2026-06-17.

CVE-2021-40884

CVE-2021-40884 is a high-severity vulnerability in Projectsend with a CVSS 3.x base score of 8.1. 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-862.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 5.5
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Projectsend
Published: 2021-10-11
Last modified: 2026-06-17

Description

Projectsend version r1295 is affected by sensitive information disclosure. Because of not checking authorization in ids parameter in files-edit.php and id parameter in process.php function, a user with uploader role can download and edit all files of users in application.

Frequently asked questions

What is CVE-2021-40884?: Projectsend version r1295 is affected by sensitive information disclosure. Because of not checking authorization in ids parameter in files-edit.php and id parameter in process.php function, a user with uploader role can download and edit all files of users in application.
How severe is CVE-2021-40884?: CVE-2021-40884 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2021-40884 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40884?: CVE-2021-40884 affects Projectsend. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40884?: 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-2021-40884 published?: CVE-2021-40884 was published on 2021-10-11 and last updated on 2026-06-17.

References

https://github.com/projectsend/projectsend/issues/992

Affected products (1)

cpe:2.3:a:projectsend:projectsend:r1295:*:*:*:*:*:*:*

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