CVE-2026-54092Public exploitNetwork attack vector

Service crash via unbounded login request bodies

Published Jun 25, 2026 · Updated Jun 25, 2026

Resource exhaustion in File Browser before 2.63.6 allows remote attackers to crash the service through oversized login requests. The loginHandler in http/auth.go lets the JSON decoder read an unbounded password into memory before CheckPwd hashes it, so concurrent requests consume CPU and memory. No account or user interaction is required; sustained requests can lag or crash the File Browser process and its container.

CVSS severity8.7
High
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in File Browser before 2.63.6 allows remote attackers to crash the service through oversized login requests. The loginHandler in http/auth.go lets the JSON decoder read an unbounded password into memory before CheckPwd hashes it, so concurrent requests consume CPU and memory. No account or user interaction is required; sustained requests can lag or crash the File Browser process and its container.

The record

CVE
CVE-2026-54092
Published
Jun 25, 2026
Updated
Jun 25, 2026
Vendor
File Browser Contributors
Product
File Browser
Classifications
CWE-400, CWE-1284, T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 25, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.63.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

File Browser Contributors · File Browserversion=< 2.63.6

Published CVSS scores

8.7GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
6.5GitHub CNACVSS:3.1/AV:N/AC:L/PR:L/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
CWE-1284Improper Validation of Specified Quantity in Input
T1499.003Application Exhaustion Flood

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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