CVE-2026-50879Public exploitNetwork attack vector

Service interruption via unbounded multipart spooling

Published Jun 15, 2026 · Updated Jun 15, 2026

Uncontrolled resource consumption in Andrei Marcu linx-server 2.3.8 allows remote attackers to interrupt service via a crafted POST request. The uploadPostHandler calls FormFile before processUpload enforces Config.maxSize, causing oversized multipart bodies to be spooled to temporary storage before rejection. Network access to the upload endpoint is sufficient; repeated unauthenticated requests can exhaust temporary disk space and make the service unavailable.

CVSS severity7.5
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled resource consumption in Andrei Marcu linx-server 2.3.8 allows remote attackers to interrupt service via a crafted POST request. The uploadPostHandler calls FormFile before processUpload enforces Config.maxSize, causing oversized multipart bodies to be spooled to temporary storage before rejection. Network access to the upload endpoint is sufficient; repeated unauthenticated requests can exhaust temporary disk space and make the service unavailable.

The record

CVE
CVE-2026-50879
Published
Jun 15, 2026
Updated
Jun 15, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-400, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA ADP VulnrichmentCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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