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Fencer Vulns
high 7.5

CVE-2026-25800 json

quinn-proto has remote memory exhaustion from unbounded out-of-order stream reassembly

published 2026-06-22 4 mo ago modified 2026-10-24 16 d ago also EUVD-2026-48374 , GHSA-4w2j-m93h-cj5j , RUSTSEC-2026-0185

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 58%
public exploits
0
none known

Summary

Quinn is a pure-Rust, async-compatible implementation of the IETF QUIC transport protocol. Starting in version 0.1.0 and prior to version 0.11.15, the `Assembler` component that assembles unordered stream fragments into consecutive chunks of the stream incurs some overhead for non-contiguous fragments. Readers that read from a `RecvStream` in order (through an `AsyncRead` impl for example) will be sensitive to peers that send fragments while leaving out early parts of the stream, and in particular, fragments with many gaps (because these cannot be defragmented). In such a scenario, the receiving connection suffers from high buffer overhead, enabling memory exhaustion. Version 0.11.15 fixes the issue.

Patch / fix

  • crates.io quinn-proto 0.11.15
  • quinn_project quinn 0.11.15
  • rust-quinn-proto Debian 14 0.11.16-1

debian advisories DEBIAN-CVE-2026-25800

  • openai-codex openSUSE Leap 16.0 0.154.0-bp160.1.1
  • openai-codex openSUSE Tumbleweed 0.152.0-1.1
  • python-uv openSUSE Tumbleweed 0.12.7-1.1

opensuse advisories openSUSE-SU-2026:21870-1openSUSE-SU-2026:11662-1openSUSE-SU-2026:11635-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-25800 updated cvss 7.5

quinn: Quinn: Remote memory exhaustion via malformed QUIC stream fragments

  • Red Hat Ansible Automation Orchestrator 2026 ansible-automation-platform/automation-orchestrator-backend-rhel9 Red Hat Confidential Compute Attestation build-of-trustee/trustee-rhel9, openshift-sandboxed-containers/osc-podvm-payload-rhel9 Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/vector-rhel9 Red Hat OpenShift Lightspeed openshift-lightspeed/lightspeed-ocp-rag-rhel9, openshift-lightspeed-tech-preview/lightspeed-rag-tool-rhel9 Red Hat Ansible Automation Platform 2 ansible-automation-platform-25/lightspeed-chatbot-rhel8 Red Hat Enterprise Linux 7 firefox
    +12 more products
    Red Hat Enterprise Linux 8 thunderbird Red Hat Enterprise Linux 9 rust, cargo, clippy, firefox, rustfmt, rust-gdb, +24 more Red Hat Enterprise Linux 10 mesa, rust, goose, firefox, trustee, thunderbird, +3 more Red Hat Enterprise Linux AI (RHEL AI) 3 rust Red Hat Hardened Images rust, openshell, chunkah 0.6.0-3.hum1, netavark 2.0.0-3.hum1, nodejs26 26.5.0-1.3.hum1, aardvark-dns 2.0.0-2.hum1, +2 more Red Hat OpenShift AI (RHOAI) rhoai/odh-llm-d-inference-scheduler-rhel9, rhoai/odh-fms-guardrails-orchestrator-rhel9, rhoai/odh-model-registry-job-async-upload-rhel9 Red Hat OpenShift Container Platform 4 kata-containers Red Hat OpenShift Container Platform 5 kata-containers Red Hat OpenShift Update Service openshift-update-service/openshift-update-service-rhel8 Red Hat Quay 3 quay/quay-rhel9 Red Hat Trusted Artifact Signer rhtas/tuffer-rhel9, rhtas/tuftool-rhel9 Red Hat Trusted Profile Analyzer rhtpa/rhtpa-rhel10, rhtpa/rhtpa-trustification-service-rhel9
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
3 mo ago

Exploit prediction

0.84% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
crates.io quinn-proto
>=0.1.0, <0.11.15
>=0.0.0-0, <0.11.15
0.11.15

Affected products

  • quinn-rs quinn

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.