CVE-2021-47824 | THREATINT

Description

iDailyDiary 4.30 contains a denial of service vulnerability that allows attackers to crash the application by overflowing the preferences tab name field. Attackers can paste a 2,000,000 character buffer into the default diary tab name to trigger an application crash.

PUBLISHED Reserved 2026-01-14 | Published 2026-01-16 | Updated 2026-01-16 | Assigner VulnCheck

MEDIUM: 4.6CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

Improper Validation of Specified Quantity in Input

Product status

4.30

affected

Credits

Ismael Nava finder

References

www.exploit-db.com/exploits/49898 (ExploitDB-49898) exploit

www.splinterware.com/index.html (Vendor Homepage) product

www.vulncheck.com/...ories/idailydiary-denial-of-service-poc (VulnCheck Advisory: iDailyDiary 4.30 - Denial of Service (PoC)) third-party-advisory

cve.org (CVE-2021-47824)

nvd.nist.gov (CVE-2021-47824)

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