CVE-2026-43981 - Algernon: Race Condition in handle() shared LState

CVE-2026-43981 - Algernon: Race Condition in handle() shared LState

https://cvefeed.io/rssfeed/latest.atom / Tue, 05/26/2026 - 20:25
CVE ID :CVE-2026-43981
Published : May 26, 2026, 4:31 p.m. | 28 minutes ago
Description :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.
Severity: 0.0 | NA
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