---
title: "CVE-2026-111103: mtrudel bandit - Denial of Service"
description: "mtrudel bandit >= 1.9.0 < 1.14.0 contains an improper cleanup on thrown exception caused by incorrect HTTP/2 handler state rollback in handle_data/3, letting unauthenticated remote attackers bypass per-connection resource limits via crafted TCP writes."
url: https://panop.io/threat-heartbeat/CVE-2026-111103/
---

# CVE-2026-111103 mtrudel bandit - Denial of Service

mtrudel bandit >= 1.9.0 < 1.14.0 contains an improper cleanup on thrown exception caused by incorrect HTTP/2 handler state rollback in handle\_data/3, letting unauthenticated remote attackers bypass per-connection resource limits via crafted TCP writes.

CVSS base score 8.2 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-111103)

## 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

26 October 2026

Updated

27 October 2026

Weakness

[CWE-460](https://cwe.mitre.org/data/definitions/460.html)

## Vendor fix

Upgrade 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

- [https://nvd.nist.gov/vuln/detail/CVE-2026-111103](https://nvd.nist.gov/vuln/detail/CVE-2026-111103)
- [https://github.com/mtrudel/bandit/commit/3ad49c80c268891e7cc412e69649115456638e59](https://github.com/mtrudel/bandit/commit/3ad49c80c268891e7cc412e69649115456638e59)
- [https://github.com/mtrudel/bandit/security/advisories/GHSA-2238-pgfc-w82m](https://github.com/mtrudel/bandit/security/advisories/GHSA-2238-pgfc-w82m)
- [https://osv.dev/vulnerability/EEF-CVE-2026-111103](https://osv.dev/vulnerability/EEF-CVE-2026-111103)
- [https://cna.erlef.org/cves/CVE-2026-111103.html](https://cna.erlef.org/cves/CVE-2026-111103.html)
- [https://github.com/mtrudel/bandit/commit/220b9dfd27f9a21305be2afc75cbe585ddc24e7a](https://github.com/mtrudel/bandit/commit/220b9dfd27f9a21305be2afc75cbe585ddc24e7a)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)