CVE-2026-93471 Dropbox esaml - Denial of Service

Dropbox esaml from 0.1.0 contains a denial of service caused by unbounded decompression of attacker-supplied compressed SAMLResponse in esaml_binding, letting unauthenticated attackers exhaust server memory and crash the Erlang VM, exploit requires sending crafted compressed SAMLResponse.

CVSS base score 8.7 /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: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
Published
22 October 2026
Updated
23 October 2026
Weakness
CWE-409

Vendor fix

Update to the latest version of esaml where this issue is fixed.

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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