HighCVENVD — high/critical CVEs (rolling 7d)· 8 Apr 2026
CVE-2026-40036 — Unfurl before 2026.04 contains an unbounded zlib decompression vulnerability in…
Severity: High · Kind: Vulnerability
Plain-English summary on the way
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From the source
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.
Vulnerability facts
- CVE
- CVE-2026-40036
- CVSS
- 7.5
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