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Fencer Vulns
high 7.5

CVE-2024-12864 json

Unauthenticated DoS by Sending Large Filename at File Upload Endpoint in netease-youdao/qanything

published 2025-03-20 19 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-6984

cvss
7.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

Summary

A Denial of Service (DoS) vulnerability was discovered in the file upload feature of netease-youdao/qanything version v2.0.0. The vulnerability is due to improper handling of form-data with a large filename in the file upload request. An attacker can exploit this vulnerability by sending a large filename, causing the server to become overwhelmed and unavailable for legitimate users. This attack does not require authentication, making it highly scalable and increasing the risk of exploitation.

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
19 mo ago

Exploit prediction

0.88% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • huntr.com https://huntr.com/bounties/365c3b9a-180c-4bb5-98d8-dbd78d93fcb7 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • netease-youdao netease-youdao/qanything

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

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.