HIGH

CVE-2021-31590

CVSS v3

8.8

HIGH

EPSS Score

2.7 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2021-31590 yet.

Full record on NVD

Description

PwnDoc all versions until 0.4.0 (2021-08-23) has incorrect JSON Webtoken handling, leading to incorrect access control. With a valid JSON Webtoken that is used for authentication and authorization, a user can keep his admin privileges even if he is downgraded to the "user" privilege. Even after a user's account is deleted, the user can still access the administration panel (and add or delete users) and has complete access to the system.

Technical details

Published: 2021-07-19

Frequently asked questions

What is CVE-2021-31590?

Is CVE-2021-31590 actively exploited?

Active exploitation of CVE-2021-31590 has not been confirmed. Its EPSS score was 2.7% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-31590?

CVE-2021-31590 has a CVSS v3 base score of 8.8 (HIGH severity).

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