CVE-2024-36050Network attack vector

Source-code substitution via stale hash-cache reuse

Published May 18, 2024 · Updated Jun 27, 2025

Improper cache validation in Nix 2.22.1 and earlier allows remote attackers to substitute attacker-controlled source via a malicious pull request. The source-fetch path keys cache reuse to the declared hash rather than the source URL, so a URL change can retain source fetched for a different location. Exploitation requires a maintainer to accept the crafted pull request, after which builds can consume source code chosen by the attacker.

CVSS severity4.3
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper cache validation in Nix 2.22.1 and earlier allows remote attackers to substitute attacker-controlled source via a malicious pull request. The source-fetch path keys cache reuse to the declared hash rather than the source URL, so a URL change can retain source fetched for a different location. Exploitation requires a maintainer to accept the crafted pull request, after which builds can consume source code chosen by the attacker.

The record

CVE
CVE-2024-36050
Published
May 18, 2024
Updated
Jun 27, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1195.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 18, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 27, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

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 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

T1195.002Compromise Software Supply Chain

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

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Your stack

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