CVE-2026-54727: Resource Exposure (CVSS 8.2)

Description

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.

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CVSS v3.1 Score

8.2

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

EPSS — Exploit Prediction

0.0012

Probability of exploitation

0.02%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-668 CWE-668

References

Other References

https://github.com/termux/proot-distro/commit/98aff324b7d8500ff75a8ca9ac087ee636be4716 https://github.com/termux/proot-distro/releases/tag/v5.1.6 https://github.com/termux/proot-distro/security/advisories/GHSA-7h3g-4w2f-fj2f https://github.com/termux/proot-distro/security/advisories/GHSA-7h3g-4w2f-fj2f

Frequently Asked Questions

What is CVE-2026-54727? +

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. It has a CVSS v3.1 base score of 8.2 (HIGH).

How severe is CVE-2026-54727? +

CVE-2026-54727 has a CVSS v3.1 score of 8.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0012, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-54727? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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