CVE-2024-47174

MEDIUMNVD 5.95.9—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.9 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 78% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
5.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.9Exploit: None knownExposed: 0

A fix is available — apply it.

Nix is a package manager for Linux and other Unix systems. Starting in version 1.11 and prior to versions 2.18.8 and 2.24.8, ` did not verify TLS certificates on HTTPS connections. This could lead to connection details such as full URLs or credentials leaking in case of a man-in-the-middle (MITM) attack. is also known as the builtin derivation builder builtin:fetchurl. It's not to be confused with the evaluation-time function builtins.fetchurl, which was not affected by this issue. A user may be affected by the risk of leaking credentials if they have a netrc file for authentication, or rely on derivations with impureEnvVars set to use credentials from the environment. In addition, the commonplace trust-on-first-use (TOFU) technique of updating dependencies by specifying an invalid hash and obtaining it from a remote store was also vulnerable to a MITM injecting arbitrary store objects. This also applied to the impure derivations experimental feature. Note that this may also happen when using Nixpkgs fetchers to obtain new hashes when not using the fake hash method, although that mechanism is not implemented in Nix itself but rather in Nixpkgs using a fixed-output derivation. The behavior was introduced in version 1.11 to make it consistent with the Nixpkgs pkgs.fetchurl and to make work in the derivation builder sandbox, which back then did not have access to the CA bundles by default. Nowadays, CA bundles are bind-mounted on Linux. This issue has been fixed in Nix 2.18.8 and 2.24.8. As a workaround, implement (authenticated) fetching with pkgs.fetchurl from Nixpkgs, using impureEnvVars and curlOpts` as needed.

CVSS v3
5.9
EG Score
5.9(medium)
EG Risk
27(Track)
EG Risk 27/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity59% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

September 26, 2024

Last Modified

April 15, 2026

References (4)

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntunix-setup-systemd (2.18.1+dfsg-1ubuntu5+esm2) @ noble2026-05-21ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 10× in last 7d / 43× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 120 total refreshes for this CVE.

  1. 2026-07-30 16:26 UTCEPSS rescore
  2. 2026-07-30 01:29 UTCEPSS rescore
  3. 2026-07-28 15:35 UTCEPSS rescore
  4. 2026-07-28 10:24 UTCOSV refresh
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  13. 2026-07-23 02:41 UTCEG score recompute
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  1. 2026-07-15 16:56 UTCEPSS rescore
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  8. 2026-07-11 08:26 UTCEPSS rescore
  9. 2026-07-11 02:11 UTCOSV refresh
  10. 2026-07-09 19:09 UTCEPSS rescore
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  66. 2026-06-04 11:39 UTCOSV refresh
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Frequently asked(5)

What is CVE-2024-47174?
CVE-2024-47174 is a medium vulnerability published on September 26, 2024. Nix is a package manager for Linux and other Unix systems. Starting in version 1.11 and prior to versions 2.18.8 and 2.24.8, <nix/fetchurl.nix> did not verify TLS certificates on HTTPS connections. This could lead to connection details such as full URLs or credentials leaking in case of a…
When was CVE-2024-47174 disclosed?
CVE-2024-47174 was first published in the National Vulnerability Database on September 26, 2024, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-47174 actively exploited?
CVE-2024-47174 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 78.0% of all scored CVEs.
What is the CVSS score of CVE-2024-47174?
CVE-2024-47174 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2024-47174?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-47174, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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