VulnSocial

CVE-2026-40036Disclosure(ryandfir / unfurl)

LOWCVSS 8.7 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

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.

ryandfir CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Exploit / PoC references
Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-409CWE-770

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • unfurl

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
ryandfir
Products
unfurl

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-04-09: 1Technical Details · 2026-04-09: 104-09
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • CVEFind.com@CveFindCom
    Disclosure

    [CVE-2026-40036: HIGH] Vulnerability alert: Unbounded zlib decompression in parse_compressed.py enables denial of service attacks. Attackers crash the service with gigabytes of compressed payloads via URL pa...#cve,CVE-2026-40036,#cybersecurity https://cvefind.com/CVE-2026-40036

    Post summary

    The alert announces a high‑severity denial‑of‑service vulnerability in parse_compressed.py caused by unbounded zlib decompression, with no proof of exploitation, patch, or PoC details provided.

    0000049
    619 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appryandfirunfurl---

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