CVE-2026-108529 mtrudel bandit - Denial of Service

mtrudel bandit 0.3.4 before 1.14.0 contains an inefficient algorithmic complexity vulnerability in HTTP/2 implementation caused by O(n²) list operations in do_pending_sends/2, letting unauthenticated remote attackers exhaust server CPU via crafted SETTINGS or WINDOW_UPDATE frames, exploit requires attacker to open many blocked streams.

CVSS base score 8.7 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
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
26 October 2026
Updated
27 October 2026
Weakness
CWE-407

Vendor fix

Update to version 1.14.0 or later.

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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