Vulnerability · Published Oct 14, 2026 · Assigned by VulnCheck

CVE-2026-110650Thumbnail through 1.5 OS Command Injection via generate_thumbnail File Paths

Critical 9.8

In plain English

A critical-severity OS command injection in thumbnail from anshulkharb. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 3.0% (higher than 87% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)3.0%top 12.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

The thumbnail Python package through 1.5 contains an OS command injection vulnerability in generate_thumbnail() that allows attackers to execute commands by supplying shell metacharacters in file paths. Attackers who control a file name passed to generate_thumbnail, such as an uploaded file, can inject commands into os.system() calls running ffmpeg, convert or unoconv with the Python process privileges.

Affected products (as reported)

Vendor	Product	Versions
anshulkharb	thumbnail	0 – through 1.5

Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/anshulkharb/thumbnail/pull/9 patch, issue-tracking
https://github.com/anshulkharb/thumbnail/blob/23b2e30509c936872a3bafac65b4aa48777e794c/thumbnail/thumbnail.py#L100-L114 technical-description
VulnCheck Advisory: Thumbnail through 1.5 OS Command Injection via generate_thumbnail File Paths third-party-advisory