PT-2026-43297 · Xyproto · Algernon

Katrielmoses · Publicado 2026-05-26 · Atualizado 2026-05-26 · CVE-2026-43981

NVD

CVSS v4.0

8.2

Alta

Vetor base

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

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.

Correção

Race Condition

Enumeração de Fraquezas

CWE-362

Identificadores relacionados

CVE-2026-43981

Produtos afetados

Algernon

Referências · 3

• https://github.com/xyproto/algernon/security/advisories/GHSA-rr2f-4wrm-h6rg · Nota
• https://github.com/xyproto/algernon/issues/172 · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-43981 · Nota de Segurança