Tad Uploader - Improper Authorization

published 2021-10-08 5 y ago modified 2026-06-17 4 mo 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 63%
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

Exploit prediction

1.03% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).

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

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary