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Vulnerability Details :

CVE-2026-41458

Summary
Assigner-VulnCheck
Assigner Org ID-83251b91-4cc7-4094-a5c7-464a1b83ea10
Published At-22 Apr, 2026 | 01:46
Updated At-25 May, 2026 | 23:42
Rejected At-
Credits

OwnTone Server < 29.1 Race Condition DoS via DAAP Login

OwnTone Server versions 28.4 through 29.0 contain a race condition vulnerability in the DAAP login handler that allows unauthenticated attackers to crash the server by exploiting unsynchronized access to the global DAAP session list. Attackers can flood the DAAP /login endpoint with concurrent requests to trigger a remote denial of service condition without requiring authentication.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:VulnCheck
Assigner Org ID:83251b91-4cc7-4094-a5c7-464a1b83ea10
Published At:22 Apr, 2026 | 01:46
Updated At:25 May, 2026 | 23:42
Rejected At:
▼CVE Numbering Authority (CNA)
OwnTone Server < 29.1 Race Condition DoS via DAAP Login

OwnTone Server versions 28.4 through 29.0 contain a race condition vulnerability in the DAAP login handler that allows unauthenticated attackers to crash the server by exploiting unsynchronized access to the global DAAP session list. Attackers can flood the DAAP /login endpoint with concurrent requests to trigger a remote denial of service condition without requiring authentication.

Affected Products
Vendor
owntone
Product
owntone-server
Repo
https://github.com/owntone/owntone-server
Default Status
unaffected
Versions
Affected
  • From 28.4.0 before 29.1.0 (semver)
Unaffected
  • dca94641a5ed66500822dd51281774794cdb6c22 (git)
Problem Types
TypeCWE IDDescription
CWECWE-362CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Type: CWE
CWE ID: CWE-362
Description: CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Metrics
VersionBase scoreBase severityVector
4.08.2HIGH
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Version: 4.0
Base score: 8.2
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
finder
Younghyo Cho @ CIS Lab., Seoultech.
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/owntone/owntone-server/pull/1980
issue-tracking
https://github.com/owntone/owntone-server/commit/dca94641a5ed66500822dd51281774794cdb6c22
patch
https://www.vulncheck.com/advisories/owntone-server-race-condition-dos-via-daap-login
third-party-advisory
Hyperlink: https://github.com/owntone/owntone-server/pull/1980
Resource:
issue-tracking
Hyperlink: https://github.com/owntone/owntone-server/commit/dca94641a5ed66500822dd51281774794cdb6c22
Resource:
patch
Hyperlink: https://www.vulncheck.com/advisories/owntone-server-race-condition-dos-via-daap-login
Resource:
third-party-advisory
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:disclosure@vulncheck.com
Published At:22 Apr, 2026 | 03:16
Updated At:22 Apr, 2026 | 03:16

OwnTone Server versions 28.4 through 29.0 contain a race condition vulnerability in the DAAP login handler that allows unauthenticated attackers to crash the server by exploiting unsynchronized access to the global DAAP session list. Attackers can flood the DAAP /login endpoint with concurrent requests to trigger a remote denial of service condition without requiring authentication.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.08.2HIGH
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Secondary
Version: 4.0
Base score: 8.2
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-362Primarydisclosure@vulncheck.com
CWE ID: CWE-362
Type: Primary
Source: disclosure@vulncheck.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/owntone/owntone-server/commit/dca94641a5ed66500822dd51281774794cdb6c22disclosure@vulncheck.com
N/A
https://github.com/owntone/owntone-server/pull/1980disclosure@vulncheck.com
N/A
https://www.vulncheck.com/advisories/owntone-server-race-condition-dos-via-daap-logindisclosure@vulncheck.com
N/A
Hyperlink: https://github.com/owntone/owntone-server/commit/dca94641a5ed66500822dd51281774794cdb6c22
Source: disclosure@vulncheck.com
Resource: N/A
Hyperlink: https://github.com/owntone/owntone-server/pull/1980
Source: disclosure@vulncheck.com
Resource: N/A
Hyperlink: https://www.vulncheck.com/advisories/owntone-server-race-condition-dos-via-daap-login
Source: disclosure@vulncheck.com
Resource: N/A

Change History

0
Information is not available yet

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ShareView Details
Matching Score-4
Assigner-GitHub, Inc.
CVSS Score-8.2||HIGH
EPSS-Not Assigned
Published-26 May, 2026 | 16:31
Updated-26 May, 2026 | 17:16
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Algernon: Race Condition in handle() shared LState

Algernon is a small self-contained pure-Go web server. Prior to 1.17.6, in engine/luahandler.go, the sync.RWMutex protecting LoadCommonFunctions is released before L.Push() and L.PCall() execute. Since gopher-lua's LState is explicitly not goroutine-safe, concurrent requests race on the shared state causing Lua VM corruption. The Go race detector confirms this immediately under modest concurrency (ab -n 1000 -c 100). This vulnerability is fixed in 1.17.6.

Action-Not Available
Vendor-xyproto
Product-algernon
CWE ID-CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Details not found