CVE-2026-86696 Dropbox esaml - Denial of Service

Dropbox esaml from 0.1.0 contains an allocation of resources without limits or throttling vulnerability caused by unchecked creation of atoms from unsigned LogoutResponse status codes, letting unauthenticated attackers exhaust the Erlang VM atom table and crash the node, exploit requires sending many distinct unsigned LogoutResponse messages.

CVSS base score 8.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.44% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/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
Published
22 October 2026
Updated
23 October 2026
Weakness
CWE-770

Vendor fix

Update to the latest version with proper atom creation limits or signature verification.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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