CVE-2024-45049Network attack vector

Service interruption via unauthenticated evaluation triggers

Published Aug 27, 2024 · Updated Aug 28, 2024

Missing authentication in NixOS Hydra before commit f730433 allows remote attackers to trigger resource-intensive jobset evaluations. The /api/push handler accepts jobset or repository inputs and invokes triggerJobset without first requiring a user with evaluation privileges. Network access to that route is sufficient; large evaluations can consume enough resources to interrupt service availability.

CVSS severity7.5
High
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Missing authentication in NixOS Hydra before commit f730433 allows remote attackers to trigger resource-intensive jobset evaluations. The /api/push handler accepts jobset or repository inputs and invokes triggerJobset without first requiring a user with evaluation privileges. Network access to that route is sufficient; large evaluations can consume enough resources to interrupt service availability.

The record

CVE
CVE-2024-45049
Published
Aug 27, 2024
Updated
Aug 28, 2024
Vendor
NixOS
Product
Hydra
Classifications
CWE-306, T1499.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 27, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <f73043378907c2c7e44f633ad764c8bdd1c947d5
  2. Affected versionversion=< f73043378907c2c7e44f633ad764c8bdd1c947d5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

NixOS · Hydraversion=0 <f73043378907c2c7e44f633ad764c8bdd1c947d5; version=< f73043378907c2c7e44f633ad764c8bdd1c947d5

Published CVSS scores

7.5GitHub CNACVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1499.002Service Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo