CVE-2026-70377

Received Received - Intake

imagecli Scale Operation Memory Exhaustion via Unbounded Ratio

Publication date: 2026-08-05

Last updated on: 2026-08-10

Assigner: TuranSec

Description

imagecli's pipeline operation (Scale::apply in src/image_ops.rs) computes output width/height as (dimension as f32 * ratio) as u32 with no upper-bound validation on the CLI-supplied ratio, which is parsed via nom::number::complete::float with no range check. Any application embedding imagecli as a library and accepting user-controlled pipeline strings is remotely crashable with a single request.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-05

Last Modified

2026-08-10

Generated

2026-08-18

AI Q&A

2026-08-05

EPSS Evaluated

2026-08-17

NVD

CVE-2026-70377

EUVD

EUVD-2026-53197

Affected Vendors & Products

Vendor	Product	Version / Range
theotherphil	imagecli	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-789	The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.

Attack-Flow Graph

Executive Summary

This vulnerability involves imagecli's scale operation which calculates output dimensions by multiplying user-supplied ratio values without validating the ratio's upper limit. Extremely large ratios cause massive memory allocation attempts, leading to process termination.

Detection Guidance

This vulnerability can be detected by monitoring for processes crashing when processing image files with large scale ratios. Check logs for applications using imagecli for out-of-memory errors or allocation failures.

Impact Analysis

This vulnerability allows remote attackers to crash applications that use imagecli by sending a single request with a very large scale ratio. This results in denial of service as the application aborts due to failed memory allocation.

Compliance Impact

This vulnerability primarily causes a Denial of Service (DoS) by consuming excessive system resources, which could disrupt services handling sensitive data. For GDPR, this may impact availability of personal data processing systems. For HIPAA, it could interrupt critical healthcare operations. However, the CVE does not directly address data confidentiality or integrity violations.

Mitigation Strategies

Immediately update imagecli to a patched version that validates the scale ratio. If embedding imagecli, add input validation to reject excessively large ratio values before processing.

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