CVE-2026-110234 (CVSS 4.4)

Description

Elio through 1.13.0 contains an insecure temporary file vulnerability that allows local users to overwrite another user's files by pre-creating symbolic links at predictable capture paths. Attackers who know the victim's Elio process ID can plant a symlink so previewing media, fonts or archives truncates and overwrites victim-owned files.

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CVSS v3.1 Score

4.4

MEDIUM

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

EPSS — Exploit Prediction

0.0014

Probability of exploitation

0.03%

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-377 CWE-377

References

Other References

https://github.com/elio-fm/elio/blob/e7daae44ce748310de441499576bdc31b936d54c/src/preview/archives/external_tools.rs#L30-L45 https://github.com/elio-fm/elio/blob/e7daae44ce748310de441499576bdc31b936d54c/src/preview/external_commands.rs#L14-L47 https://github.com/elio-fm/elio/blob/e7daae44ce748310de441499576bdc31b936d54c/src/preview/external_commands.rs#L92-L95 https://github.com/elio-fm/elio/releases/tag/v1.13.0 https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/r1d_wQojfg https://www.vulncheck.com/advisories/elio-through-1.13.0-insecure-temporary-file-creation-in-external-preview-command-capture

Frequently Asked Questions

What is CVE-2026-110234? +

Elio through 1.13.0 contains an insecure temporary file vulnerability that allows local users to overwrite another user's files by pre-creating symbolic links at predictable capture paths. Attackers who know the victim's Elio process ID can plant a symlink so previewing media, fonts or archives truncates and overwrites victim-owned files. It has a CVSS v3.1 base score of 4.4 (MEDIUM).

How severe is CVE-2026-110234? +

CVE-2026-110234 has a CVSS v3.1 score of 4.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0014, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-110234? +

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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