CVE-2026-54341Public exploitNetwork attack vector

Unauthenticated server crash via shallow listpack validation

Published Jun 26, 2026 · Updated Jun 26, 2026

Out-of-bounds read in Dragonfly before 1.39.0 allows remote attackers to crash the server through a crafted RESTORE payload. The RESTORE path performs only shallow integrity checks on listpack-backed collections, then lpGet trusts an attacker-controlled entry length and passes an oversized view to collection code, which reads beyond the payload buffer. Default deployments require no authentication, so one command terminates the entire process with SIGSEGV; authenticated deployments remain exposed to users permitted to issue RESTORE.

CVSS severity7.5
High
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Dragonfly before 1.39.0 allows remote attackers to crash the server through a crafted RESTORE payload. The RESTORE path performs only shallow integrity checks on listpack-backed collections, then lpGet trusts an attacker-controlled entry length and passes an oversized view to collection code, which reads beyond the payload buffer. Default deployments require no authentication, so one command terminates the entire process with SIGSEGV; authenticated deployments remain exposed to users permitted to issue RESTORE.

The record

CVE
CVE-2026-54341
Published
Jun 26, 2026
Updated
Jun 26, 2026
Vendor
DragonflyDB
Product
Dragonfly
Classifications
CWE-125, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 26, 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=< 1.39.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

DragonflyDB · Dragonflyversion=< 1.39.0

Published CVSS scores

7.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499.004Application or System Exploitation

Public exploit references

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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