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CVE-2026-104057— Podgrab Unauthenticated DoS via Concurrent Map Access in WebSocket Handler

Quick assessment

Affected
akhilrex podgrab
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Podgrab 存在一个未经身份验证的拒绝服务漏洞，该漏洞由其 WebSocket 处理器中对共享映射（activePlayers 和 allConnections）的未同步并发访问引起。具体而言，Wshandler 和 HandleWebsocketMessages 这两个 goroutine（协程）在对这些映射进行读写操作时未使用互斥锁保护。远程攻击者可以建立多个到 /ws 端点的 WebSocket 连接，并在循环中发送消息，从而触发 Go 运行时数据竞争（data race），导致进程崩溃。这将造成拒绝服务

CVSS 7.5 · High EPSS 0.27% · P17

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
akhilrex podgrab ≤ 032248091294dbf5b6a439a5afd93788a7cc647f affected
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I. Basic Information for CVE-2026-104057

Vulnerability Information
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Vulnerability Title
Podgrab Unauthenticated DoS via Concurrent Map Access in WebSocket Handler
Source: CVE Program / CVE List V5
Vulnerability Description
Podgrab contains an unauthenticated denial-of-service vulnerability caused by unsynchronized concurrent access to shared maps (activePlayers and allConnections) in its WebSocket handler, where Wshandler and HandleWebsocketMessages goroutines read and write these maps without a mutex. A remote attacker can open multiple WebSocket connections to the /ws endpoint and send messages in a loop to trigger a Go runtime data race that crashes the process, causing a denial of service that requires operator intervention to restore service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
akhilrex podgrab 0 ~ 032248091294dbf5b6a439a5afd93788a7cc647f -

II. Public POCs for CVE-2026-104057

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-104057

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Vendor Advisories for CVE-2026-104057 (1)

Other References for CVE-2026-104057 (1)

IV. Related Vulnerabilities

Same product: podgrab
Same vendor: akhilrex
Same weakness: CWE-362

V. Comments for CVE-2026-104057

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