CVE-2026-54574

HIGHPre-NVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (7th percentile of EPSS-scored CVEs). 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, secondary
Elevated
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 8.2Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

proot-distro is a utility for managing proot containers. Prior to version 5.1.5, proot-distro install extracted plain tarball root filesystems through _extract_plain_tar() in proot_distro/commands/install.py and Docker layers through _apply_layer() in proot_distro/helpers/docker.py without validating archive-controlled symlink targets in member.linkname, allowing a malicious archive to plant an absolute host-path symlink and write files through it onto the host filesystem. This issue is fixed in version 5.1.5.

CVSS v3
8.2
EG Score
8.2HIGHmedium confidence
EG Risk
53
EG Risk 53/100CISA SSVC

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
Severity82% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.2%
EPSS %ILE
7th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 29, 2026

Last Modified

July 30, 2026

Advisory Details (3)

Auto-updated Jul 29, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_release, github.
github_release Patch Available

Version 5.1.5

Patch available: termux/proot-distro v5.1.5

https://github.com/termux/proot-distro/releases/tag/v5.1.5
github_commit Patch Available

commit a96d7a9667f3 (termux/proot-distro)

Patch available: termux/proot-distro v5.1.5 (contains commit a96d7a9667f3)

https://github.com/termux/proot-distro/commit/a96d7a9667f38e45d812614852ee3915d1c0ae45
githubMentions a patch (unverified)🟡 PoC Available

Symlink Escape (Arbitrary Host File Write) in `proot-distro install` via Malicious Tar Archive · Advisory · termux/proot-distro · GitHub

https://github.com/termux/proot-distro/security/advisories/GHSA-9xq3-3fqg-4vg7

Vendor Advisories for CVE-2026-54574(1)

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

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
proot-distro5.0.0 ... 5.1.4 (13 versions)
  • every version up to 5.1.5: fixed in 5.1.5
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 46× 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 123 total refreshes for this CVE.

  1. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:12 UTCEPSS rescore
  3. 2026-10-07 23:48 UTCEPSS rescore
  4. 2026-10-07 00:00 UTCEG score recompute
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  25. 2026-09-23 21:49 UTCEG score recompute
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  1. 2026-09-23 17:54 UTCEPSS rescore
  2. 2026-09-22 15:48 UTCEG score recompute
  3. 2026-09-20 20:16 UTCEPSS rescore
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  5. 2026-09-19 04:53 UTCEG score recompute
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  25. 2026-09-07 16:01 UTCEPSS rescore
  26. 2026-09-06 22:40 UTCEG score recompute
  27. 2026-09-06 13:47 UTCEPSS rescore
  28. 2026-09-05 19:06 UTCEG score recompute
  29. 2026-09-05 05:11 UTCEG score recompute
  30. 2026-09-04 11:55 UTCEG score recompute
  31. 2026-09-04 05:06 UTCEPSS rescore
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  34. 2026-09-01 13:54 UTCEPSS rescore
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  36. 2026-08-31 00:35 UTCEG score recompute
  37. 2026-08-30 19:17 UTCEPSS rescore
  38. 2026-08-30 11:58 UTCEG score recompute
  39. 2026-08-30 01:22 UTCEPSS rescore
  40. 2026-08-29 23:17 UTCEG score recompute
  41. 2026-08-28 21:41 UTCEPSS rescore
  42. 2026-08-27 22:30 UTCEG score recompute
  43. 2026-08-27 14:25 UTCEPSS rescore
  44. 2026-08-26 21:13 UTCEG score recompute
  45. 2026-08-26 14:46 UTCEPSS rescore
  46. 2026-08-25 19:16 UTCEG score recompute
  47. 2026-08-25 13:49 UTCEPSS rescore
  48. 2026-08-24 17:54 UTCEG score recompute
  49. 2026-08-23 03:00 UTCEG score recompute
  50. 2026-08-23 00:19 UTCEPSS rescore
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  52. 2026-08-21 23:49 UTCEPSS rescore
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  55. 2026-08-19 23:07 UTCEG score recompute
  56. 2026-08-19 17:04 UTCEPSS rescore
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  58. 2026-08-18 13:48 UTCEPSS rescore
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  68. 2026-08-13 22:00 UTCEPSS rescore
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  70. 2026-08-12 13:51 UTCEPSS rescore
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  73. 2026-08-11 00:00 UTCEPSS rescore
  74. 2026-08-09 20:18 UTCEG score recompute
  75. 2026-08-09 13:46 UTCEPSS rescore

Related CVEs(same product + same CWE)

Same product

1 shown

PyPI:proot-distro

Frequently asked(5)

What is CVE-2026-54574?
CVE-2026-54574 is a high vulnerability published on July 29, 2026. proot-distro is a utility for managing proot containers. Prior to version 5.1.5, proot-distro install extracted plain tarball root filesystems through extractplaintar() in prootdistro/commands/install.py and Docker layers through applylayer() in proot_distro/helpers/docker.py without validating…
When was CVE-2026-54574 disclosed?
CVE-2026-54574 was first published on July 29, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54574 actively exploited?
CVE-2026-54574 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (7th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-54574?
CVE-2026-54574 has a CVSS base score of 8.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-54574?
A fix for CVE-2026-54574 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-54574 are linked in the Vendor Advisories panel on this page.

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