CVE-2026-54727

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: 0.1%, top 98% 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, 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%CVSS: 8.2Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

proot-distro is a utility for managing proot containers. Prior to version 5.1.6, proot-distro restore accepted hardlink entries whose linkname referenced another installed container and did not verify that the hardlink source container matched the destination container being restored, allowing a crafted restore archive to copy files between otherwise isolated containers. This issue is fixed in version 5.1.6.

CVSS v3
8.2
EG Score
8.2(medium)
EG Risk
53(Track*)
EG Risk 53/100SSVC: 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
Severity82% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

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, github_commit, github_release.
github_release Patch Available

Version 5.1.6

Patch available: termux/proot-distro v5.1.6

https://github.com/termux/proot-distro/releases/tag/v5.1.6
github_commit Patch Available

commit 98aff324b7d8 (termux/proot-distro)

Patch available: termux/proot-distro v5.1.6 (contains commit 98aff324b7d8)

https://github.com/termux/proot-distro/commit/98aff324b7d8500ff75a8ca9ac087ee636be4716
github Patch Available🟡 PoC Available

Container Isolation Bypass via Crafted Restore Archive in proot-distro · Advisory · termux/proot-distro · GitHub

https://github.com/termux/proot-distro/security/advisories/GHSA-7h3g-4w2f-fj2f

Vendor Advisories for CVE-2026-54727(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 rangeFixed inDependents
proot-distro5.0.0 ... 5.1.5 (14 versions)5.1.6—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 49× 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.

  1. 2026-08-25 19:03 UTCEG score recompute
  2. 2026-08-25 13:49 UTCEPSS rescore
  3. 2026-08-24 18:09 UTCEG score recompute
  4. 2026-08-21 03:20 UTCEG score recompute
  5. 2026-08-20 22:55 UTCEPSS rescore
  6. 2026-08-20 02:28 UTCEG score recompute
  7. 2026-08-19 17:04 UTCEPSS rescore
  8. 2026-08-19 01:27 UTCEG score recompute
  9. 2026-08-18 13:48 UTCEPSS rescore
  10. 2026-08-17 23:49 UTCEG score recompute
  11. 2026-08-17 13:47 UTCEPSS rescore
  12. 2026-08-16 23:01 UTCEG score recompute
  13. 2026-08-16 14:56 UTCEPSS rescore
  14. 2026-08-16 10:37 UTCEG score recompute
  15. 2026-08-16 02:14 UTCEPSS rescore
  16. 2026-08-15 09:50 UTCEG score recompute
  17. 2026-08-15 01:30 UTCEPSS rescore
  18. 2026-08-14 09:03 UTCEG score recompute
  19. 2026-08-13 22:00 UTCEPSS rescore
  20. 2026-08-12 19:52 UTCEG score recompute
  21. 2026-08-12 13:51 UTCEPSS rescore
  22. 2026-08-11 19:06 UTCEG score recompute
  23. 2026-08-11 06:36 UTCEG score recompute
  24. 2026-08-11 00:00 UTCEPSS rescore
  25. 2026-08-09 17:25 UTCEG score recompute
Show 24 more
  1. 2026-08-09 13:46 UTCEPSS rescore
  2. 2026-08-08 16:39 UTCEG score recompute
  3. 2026-08-08 16:37 UTCEPSS rescore
  4. 2026-08-06 15:04 UTCEG score recompute
  5. 2026-08-06 13:47 UTCEPSS rescore
  6. 2026-08-06 02:39 UTCEG score recompute
  7. 2026-08-05 19:17 UTCEPSS rescore
  8. 2026-08-05 00:55 UTCEG score recompute
  9. 2026-08-04 15:10 UTCEPSS rescore
  10. 2026-08-04 12:32 UTCEG score recompute
  11. 2026-08-04 10:39 UTCEPSS rescore
  12. 2026-08-03 11:03 UTCEG score recompute
  13. 2026-08-03 10:36 UTCEPSS rescore
  14. 2026-08-02 10:12 UTCEG score recompute
  15. 2026-08-02 02:27 UTCEPSS rescore
  16. 2026-08-01 09:25 UTCEG score recompute
  17. 2026-08-01 04:16 UTCEPSS rescore
  18. 2026-07-30 20:12 UTCEG score recompute
  19. 2026-07-30 16:28 UTCEPSS rescore
  20. 2026-07-29 19:33 UTCEG score recompute
  21. 2026-07-29 18:34 UTCEG score recompute
  22. 2026-07-29 17:26 UTCEG score recompute
  23. 2026-07-29 17:08 UTCEG score recompute
  24. 2026-07-29 17:07 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-54727?
CVE-2026-54727 is a high vulnerability published on July 29, 2026. proot-distro is a utility for managing proot containers. Prior to version 5.1.6, proot-distro restore accepted hardlink entries whose linkname referenced another installed container and did not verify that the hardlink source container matched the destination container being restored, allowing a…
When was CVE-2026-54727 disclosed?
CVE-2026-54727 was first published in the National Vulnerability Database 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-2026-54727 actively exploited?
CVE-2026-54727 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 97.9% of all scored CVEs.
What is the CVSS score of CVE-2026-54727?
CVE-2026-54727 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-54727?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54727, 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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