CVE-2026-40036

HIGH

7.5

Descricao

Unfurl before 2026.04 contains an unbounded zlib decompression vulnerability in parse_compressed.py that allows remote attackers to cause denial of service. Attackers can submit highly compressed payloads via URL parameters to the /json/visjs endpoint that expand to gigabytes, exhausting server memory and crashing the service.

Detalhes CVE

Pontuacao CVSS v3.17.5

SeveridadeHIGH

Vetor CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioNONE

Publicado4/8/2026

Ultima modificacao4/17/2026

Fontenvd

Avistamentos honeypot0

Produtos afetados

ryandfir:unfurl

Fraquezas (CWE)

CWE-409CWE-770

Referencias

https://github.com/obsidianforensics/unfurl/releases/tag/v2026.04(disclosure@vulncheck.com)

https://github.com/obsidianforensics/unfurl/security/advisories/GHSA-h5qv-qjv4-pc5m(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/dfir-unfurl-denial-of-service-via-unbounded-zlib-decompression(disclosure@vulncheck.com)

Correlacoes IOC

Sem correlacoes registradas

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