---
title: "CVE-2026-116372: MISP mispguard - Bypass Filtering"
description: "MISP mispguard contains a bypass vulnerability caused by improper handling of HTTP 2xx status codes other than 200 in process_feed_response, letting attackers controlling feed endpoints bypass filtering and inject malicious data, exploit requires attacker control of a configured feed endpoint."
url: https://panop.io/threat-heartbeat/CVE-2026-116372/
---

# CVE-2026-116372 MISP mispguard - Bypass Filtering

MISP mispguard contains a bypass vulnerability caused by improper handling of HTTP 2xx status codes other than 200 in process\_feed\_response, letting attackers controlling feed endpoints bypass filtering and inject malicious data, exploit requires attacker control of a configured feed endpoint.

CVSS base score 7.7 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-116372)

## Details

Type

Bypass Filtering

Impact

Data Tampering

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/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

26 October 2026

Weakness

[CWE-20](https://cwe.mitre.org/data/definitions/20.html)

## Vendor fix

Update mispguard to properly filter all HTTP 2xx responses or apply latest patches.

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-2026-116372](https://nvd.nist.gov/vuln/detail/CVE-2026-116372)
- [https://github.com/MISP/misp-guard/commit/b5f606a4e57a49cc4dbf9b3ef0c6ddd19f866735](https://github.com/MISP/misp-guard/commit/b5f606a4e57a49cc4dbf9b3ef0c6ddd19f866735)

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## 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

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