CVE-2026-44029

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-05-05. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 5.3Exploit: None knownExposed: 0

A fix is available — apply it.

An issue was discovered in Nix before 2.34.7. Writing to arbitrary files can occur via "nix-prefetch-url --unpack" or "nix store prefetch-file --unpack" directory traversal. The fixed versions are 2.34.7, 2.33.6, 2.32.8, 2.31.5, 2.30.5, 2.29.4, and 2.28.7 (introduced in 2.24.7);

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity53% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
46%
KEV
Not listed

Published

May 5, 2026

Last Modified

May 5, 2026

Advisory Details (3)

Auto-updated May 5, 2026
Patch available. Sources: github.
generic

oss-security - Local privilege escalation in Lix and Nix

https://www.openwall.com/lists/oss-security/2026/05/04/33
github Patch Available

Absolute path traversal when unpacking archives to disk · Advisory · NixOS/nix · GitHub

Affected: 2.34.7, 2.33.6, 2.32.8, 2.31.5, 2.30.5, 2.29.4, 2.28.7.

https://github.com/NixOS/nix/security/advisories/GHSA-gr92-w2r5-qw5p
generic

Security Advisory: Local privilege escalation in Lix and Nix - Security - NixOS Discourse

https://discourse.nixos.org/t/security-advisory-local-privilege-escalation-in-lix-and-nix/77407

Vendor Advisories for CVE-2026-44029(4)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatruff-main-0.15.11-1.hum12026-04-27redhat
redhatchunkah-main-0.4.0-1.hum12026-04-23redhat
redhatrust-main-1.95.0-2.hum12026-04-21redhat
redhatbootc-main-1.14.0-0.1.1.hum12026-04-08redhat

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.

Affected Packages

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFixed inDependents
nix2.26.3+dfsg-1 ... 2.34.8+dfsg-1 (6 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
nix2.26.3+dfsg-1, 2.32.5+dfsg-1, 2.32.5+dfsg-2, 2.34.3+dfsg-1, 2.34.6+dfsg-12.34.8+dfsg-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 31× 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 192 total refreshes for this CVE.

  1. 2026-09-13 16:47 UTCEPSS rescore
  2. 2026-09-12 15:01 UTCEPSS rescore
  3. 2026-09-11 17:40 UTCOSV refresh
  4. 2026-09-11 14:53 UTCEPSS rescore
  5. 2026-09-11 09:37 UTCEPSS rescore
  6. 2026-09-10 09:34 UTCEPSS rescore
  7. 2026-09-08 22:00 UTCEPSS rescore
  8. 2026-09-07 16:01 UTCEPSS rescore
  9. 2026-09-06 13:47 UTCEPSS rescore
  10. 2026-09-04 05:06 UTCEPSS rescore
  11. 2026-09-02 14:12 UTCEPSS rescore
  12. 2026-09-01 13:54 UTCEPSS rescore
  13. 2026-08-30 19:17 UTCEPSS rescore
  14. 2026-08-30 01:22 UTCEPSS rescore
  15. 2026-08-28 21:41 UTCEPSS rescore
  16. 2026-08-27 14:25 UTCEPSS rescore
  17. 2026-08-26 14:46 UTCEPSS rescore
  18. 2026-08-25 13:49 UTCEPSS rescore
  19. 2026-08-23 21:15 UTCEG score recompute
  20. 2026-08-23 21:15 UTCVendor advisory
  21. 2026-08-23 21:15 UTCGHSA enrichment
  22. 2026-08-23 00:19 UTCEPSS rescore
  23. 2026-08-21 23:49 UTCEPSS rescore
  24. 2026-08-20 22:55 UTCEPSS rescore
  25. 2026-08-19 17:04 UTCEPSS rescore
Show 75 more
  1. 2026-08-18 13:48 UTCEPSS rescore
  2. 2026-08-17 13:47 UTCEPSS rescore
  3. 2026-08-17 13:05 UTCEG score recompute
  4. 2026-08-17 13:05 UTCVendor advisory
  5. 2026-08-17 13:05 UTCGHSA enrichment
  6. 2026-08-16 14:56 UTCEPSS rescore
  7. 2026-08-16 05:01 UTCEG score recompute
  8. 2026-08-16 05:01 UTCVendor advisory
  9. 2026-08-16 05:01 UTCGHSA enrichment
  10. 2026-08-16 02:14 UTCEPSS rescore
  11. 2026-08-15 01:45 UTCEG score recompute
  12. 2026-08-15 01:45 UTCVendor advisory
  13. 2026-08-15 01:44 UTCGHSA enrichment
  14. 2026-08-15 01:30 UTCEPSS rescore
  15. 2026-08-14 03:37 UTCEG score recompute
  16. 2026-08-14 03:37 UTCVendor advisory
  17. 2026-08-14 03:37 UTCGHSA enrichment
  18. 2026-08-13 22:00 UTCEPSS rescore
  19. 2026-08-12 21:52 UTCEG score recompute
  20. 2026-08-12 21:52 UTCVendor advisory
  21. 2026-08-12 21:52 UTCGHSA enrichment
  22. 2026-08-12 13:51 UTCEPSS rescore
  23. 2026-08-11 23:45 UTCEG score recompute
  24. 2026-08-11 23:45 UTCVendor advisory
  25. 2026-08-11 23:45 UTCGHSA enrichment
  26. 2026-08-11 13:43 UTCEPSS rescore
  27. 2026-08-11 01:38 UTCEG score recompute
  28. 2026-08-11 01:38 UTCVendor advisory
  29. 2026-08-11 01:38 UTCGHSA enrichment
  30. 2026-08-11 00:00 UTCEPSS rescore
  31. 2026-08-10 00:49 UTCEG score recompute
  32. 2026-08-10 00:49 UTCVendor advisory
  33. 2026-08-10 00:49 UTCGHSA enrichment
  34. 2026-08-09 13:46 UTCEPSS rescore
  35. 2026-08-09 02:42 UTCEG score recompute
  36. 2026-08-09 02:42 UTCVendor advisory
  37. 2026-08-09 02:42 UTCGHSA enrichment
  38. 2026-08-08 16:37 UTCEPSS rescore
  39. 2026-08-07 18:51 UTCEG score recompute
  40. 2026-08-07 18:51 UTCVendor advisory
  41. 2026-08-07 18:51 UTCGHSA enrichment
  42. 2026-08-06 20:34 UTCEG score recompute
  43. 2026-08-06 20:34 UTCVendor advisory
  44. 2026-08-06 20:34 UTCGHSA enrichment
  45. 2026-08-06 13:46 UTCEPSS rescore
  46. 2026-08-05 22:28 UTCEG score recompute
  47. 2026-08-05 22:28 UTCVendor advisory
  48. 2026-08-05 22:27 UTCGHSA enrichment
  49. 2026-08-05 19:17 UTCEPSS rescore
  50. 2026-08-04 15:10 UTCEPSS rescore
  51. 2026-08-04 10:38 UTCEPSS rescore
  52. 2026-08-04 02:10 UTCEG score recompute
  53. 2026-08-04 02:10 UTCVendor advisory
  54. 2026-08-04 02:10 UTCGHSA enrichment
  55. 2026-08-03 10:36 UTCEPSS rescore
  56. 2026-08-03 04:01 UTCVendor advisory
  57. 2026-08-03 04:01 UTCGHSA enrichment
  58. 2026-08-02 05:23 UTCEG score recompute
  59. 2026-08-02 05:23 UTCVendor advisory
  60. 2026-08-02 05:23 UTCGHSA enrichment
  61. 2026-08-02 02:27 UTCEPSS rescore
  62. 2026-08-01 04:16 UTCEPSS rescore
  63. 2026-07-30 16:28 UTCEPSS rescore
  64. 2026-07-30 01:30 UTCEPSS rescore
  65. 2026-07-28 15:36 UTCEPSS rescore
  66. 2026-07-27 14:13 UTCEPSS rescore
  67. 2026-07-26 14:54 UTCEPSS rescore
  68. 2026-07-26 14:54 UTCEPSS rescore
  69. 2026-07-25 14:18 UTCEPSS rescore
  70. 2026-07-24 14:17 UTCEPSS rescore
  71. 2026-07-23 14:18 UTCEPSS rescore
  72. 2026-07-23 03:14 UTCEG score recompute
  73. 2026-07-22 14:08 UTCEPSS rescore
  74. 2026-07-21 15:24 UTCEPSS rescore
  75. 2026-07-20 22:02 UTCOSV refresh

Frequently asked(5)

What is CVE-2026-44029?
CVE-2026-44029 is a medium vulnerability published on May 5, 2026. An issue was discovered in Nix before 2.34.7. Writing to arbitrary files can occur via "nix-prefetch-url --unpack" or "nix store prefetch-file --unpack" directory traversal. The fixed versions are 2.34.7, 2.33.6, 2.32.8, 2.31.5, 2.30.5, 2.29.4, and 2.28.7 (introduced in 2.24.7);
When was CVE-2026-44029 disclosed?
CVE-2026-44029 was first published in the National Vulnerability Database on May 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44029 actively exploited?
CVE-2026-44029 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 54.5% of all scored CVEs.
What is the CVSS score of CVE-2026-44029?
CVE-2026-44029 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-44029?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44029, 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.

Dependency Blast Radius

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