CVE-2026-16211Public exploit

Duplicate hostname allocation via unlocked counter read

Published Jul 19, 2026 · Updated Jul 19, 2026

Race condition in Ralph at commit bcf65b994ef29fb3fc2e10b660e6288723d5209e allows remote authenticated users to obtain duplicate hostnames via concurrent requests. AssetLastHostname.increment_hostname atomically increments the shared database counter but then reads the row again without locking, so overlapping workers can both return the later value. Exploitation requires adjacent-network access, low privileges, and concurrent asset creation; duplicate names can misattribute inventory or direct automation at the wrong host.

CVSS severityUnavailable
Unscored
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in Ralph at commit bcf65b994ef29fb3fc2e10b660e6288723d5209e allows remote authenticated users to obtain duplicate hostnames via concurrent requests. AssetLastHostname.increment_hostname atomically increments the shared database counter but then reads the row again without locking, so overlapping workers can both return the later value. Exploitation requires adjacent-network access, low privileges, and concurrent asset creation; duplicate names can misattribute inventory or direct automation at the wrong host.

The record

CVE
CVE-2026-16211
Published
Jul 19, 2026
Updated
Jul 19, 2026
Vendor
Allegro
Product
Ralph
Classifications
CWE-362, T1565
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 19, 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=bcf65b994ef29fb3fc2e10b660e6288723d5209e

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

Allegro · Ralphversion=bcf65b994ef29fb3fc2e10b660e6288723d5209e

Published CVSS scores

2.1VulDBCVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
2.6VulDBCVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
2.6VulDBCVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
1.4VulDBAV:A/AC:H/Au:S/C:N/I:P/A:N/E:POC/RL:ND/RC:UR

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)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-362Race Condition
T1565Data Manipulation

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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