Vulnerability in quinn-proto (CVE-2026-25800)
Summary
Vulnerability in quinn-proto (CVE-2026-25800). Risk of unauthorized operations or information disclosure. Exploitable via Assembler. Mitigation: upgrade to 0.11.15 or later.
Original description
The description as published by the source.
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.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-25800 has been found in quinn-proto.
Attackers can target a specific entry point like Assembler over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 7.5/10.
What to do: upgrade quinn-proto to 0.11.15 or later.
If unsure, ask your IT team or search "quinn-proto CVE-2026-25800" on the vendor's site.
CVE-2026-25800 (quinn-proto) — CWE-770 / CVSS v3 7.5
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: Assembler / AsyncRead
Patched: 0.11.15 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-770) exists in quinn-proto. Attackers reach the vulnerable code path via Assembler without authentication.
Check the vendor advisory for the affected versions of quinn-proto. Attack surface: Assembler / AsyncRead.
Severity: High (CVSS 7.5/10). Risk of unauthorized operations or information disclosure.
Update to 0.11.15.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'quinn-proto' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'quinn-proto' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
quinn-protoを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade quinn-proto to 0.11.15ステージング環境で 0.11.15 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Ubuntu UBUNTU-CVE-2026-25800 rust-quinn-proto
References
- advisory rustsec.org
- package crates.io
- web github.com
- web security-advisories@github.com