High 8.1Published Oct 12, 2026

CVE-2026-59976ConvertX: Path Traversal vulnerability leading to Arbitrary File Write

Updated under an hour ago (2026-10-19 07:00 UTC)

Does this affect you?

It affects C4illin ConvertX. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.65%, higher than 50% of scored CVEs.

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Every CVE for C4illin ConvertX

Exploited in the last 30 days

ConvertX is a self-hosted file conversion service. Prior to 0.18.0, the ImageMagick converter uses the unsanitized convert_to parameter to construct an output path. If an authenticated user, or an unauthenticated user when ConvertX is configured to allow unauthenticated access, uploads an extensionless image and supplies directory traversal sequences in convert_to through /convert, the constructed path escapes the intended output directory, allowing the attacker to write converted output to arbitrary container paths, potentially overwriting files or causing denial of service. This issue is fixed in version 0.18.0.

CVSS: 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Weakness (CWE): CWE-22, CWE-73
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.65% (percentile 50)
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Oct 13, 2026
First seen by InfoSec Signals: Oct 12, 2026

Affected products

Affected products

C4illin ConvertX c4illin:convertx (from the name)	before 0.18.0	CNA record

References

https://github.com/C4illin/ConvertX/security/advisories/GHSA-pvqw-vc5x-266jx-refsource-confirm
https://github.com/C4illin/ConvertX/pull/532x-refsource-misc
https://github.com/C4illin/ConvertX/commit/0965928949319e2839770fbf57a8337440d42630x-refsource-misc
https://github.com/C4illin/ConvertX/releases/tag/v0.18.0x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.