CVE-2026-92103Network attack vectorHinoki check available

Client memory retention via delayed HTTP/2 frame rejection

Published Sep 28, 2026 · Updated Sep 28, 2026

Resource exhaustion in Elixir Mint before 1.11.0 allows remote attackers controlling an HTTP/2 server to retain up to 16 MiB per connection. Mint.HTTP2.Frame.decode_next/2 waits for the declared payload before comparing its length with max_frame_size, while the connection buffers incomplete data. Exploitation requires a client connection to an attacker-controlled HTTP/2 server; retained data is capped by the 24-bit frame length and requires the server to send equivalent bytes.

CVSS severityUnavailable
Unscored
EPSS probability0.33%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Resource exhaustion in Elixir Mint before 1.11.0 allows remote attackers controlling an HTTP/2 server to retain up to 16 MiB per connection. Mint.HTTP2.Frame.decode_next/2 waits for the declared payload before comparing its length with max_frame_size, while the connection buffers incomplete data. Exploitation requires a client connection to an attacker-controlled HTTP/2 server; retained data is capped by the 24-bit frame length and requires the server to send equivalent bytes.

The record

CVE
CVE-2026-92103
Published
Sep 28, 2026
Updated
Sep 28, 2026
Vendor
Elixir Mint
Product
Mint
Classifications
T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.1.0 <1.11.0
  2. Affected versionversion=596ca4304504be68939c4929e0831557097962b8 <20252ca85065f4d1092aed9ee4ed21841a507dfe

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Elixir Mint · Mintversion=0.1.0 <1.11.0; version=596ca4304504be68939c4929e0831557097962b8 <20252ca85065f4d1092aed9ee4ed21841a507dfe

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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