7.5

CVE-2026-25800: quinn-rs quinn

CVSS: 7.5v3.1HighDeferred
AliasesUBUNTU-CVE-2026-25800DEBIAN-CVE-2026-25800openSUSE-SU-2026:11635-1
Published 23-07-2026Last modified 23-07-2026
Open JSON

Vulnerability summary

CVE-2026-25800 is a high (CVSS 7.5) vulnerability in quinn-rs quinn. EPSS estimates a 0.84% chance of exploitation in the next 30 days, higher than 57.1% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.84%
0%100%
Low · +0.23 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
RUSTSEC-2026-0341

Timeline

  1. 23-07-2026
    PublishedVulnerability first disclosed.
  2. 23-07-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.84%

Chance of exploitation in the next 30 days

Percentile

57%

Versus all other CVEs

30-day change

+0.23 pp

From 0.61% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.84%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Opensuse3 products
  • openai-codex&distro=openSUSE Leap 16.0< 0.154.0-bp160.1.1
  • openai-codex&distro=openSUSE Tumbleweed< 0.152.0-1.1
  • python-uv&distro=openSUSE Tumbleweed< 0.12.7-1.1
Crates.Io1 product
  • quinn-proto≥ 0.1.0, < 0.11.15 | ≥ 0.0.0-0, < 0.11.15
Debian1 product
  • rust-quinn-protoAll versions (No fix recorded) | < 0.11.16-1
Quinn-rs1 product
  • quinn≥ 0.1.0, < 0.11.15
Ubuntu1 product
  • rust-quinn-protoAll versions (No fix recorded)

5 vendors · 7 products

References

12 links
Show all 12 references