CVE-2024-23826

Uploading an image with a specific filename causes a server-side DoS

MEDIUM
5.7
CVSS Score
Published: January 29, 2024 at 03:54 PM UTC
Updated: June 17, 2026 at 07:13 AM UTC
2 products affected across 2 vendorsSpbu Se SiteMath Spbu Spbu Se Site

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Severity
MEDIUM5.7
Exploit prediction
EPSS 0.4%
SSVC
PoC

Description

spbu_se_site is the website of the Department of System Programming of St. Petersburg State University. Before 2024.01.29, when uploading an avatar image, an authenticated user may intentionally use a large Unicode filename which would lead to a server-side denial of service under Windows. This is due to no limitation of the length of the filename and the costly use of the Unicode normalization with the form NFKD on Windows OS. This vulnerability was fixed in the 2024.01.29 release.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2024.01.29
Affected range stops below 2024.01.29, so it looks safe — our inference, not a vendor statement
v < 2024.01.29
Affected range stops below 2024.01.29, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-770

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