Tad Uploader - Improper Authorization

published 2021-10-08 5y ago modified 2026-06-17 4mo ago also EUVD-2021-28966

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.0%; EPSS 1.0% chance of exploitation in 30 days, percentile 64%
public exploits: 0; none known

Tad Uploader edit book list function is vulnerable to authorization bypass, thus remote attackers can use the function to amend the folder names in the book list without logging in.

Patch / fix

fixed in 1

tad_uploader_project tad_uploader 3.5.4

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Exploit prediction

1.03% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
NVD	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:P/A:N

Affected products

Tad Uploader

Classification

Weakness

CWE-285 Improper Authorization
CWE-306 Missing Authentication for Critical Functionality

References

twcert.org.tw /tw/cp-132-5175-a2f8d-1.html
third-party-advisory

Sources

CVE List CVE-2021-41976
NVD CVE-2021-41976

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