# CVE-2026-18772: Improperly controlled sequential memory allocation vulnerability in Samsung Open Source rlottie allows Exponential Data Expansion.

Source: https://junglewise.ai/threats/cve-2026-18772-improperly-controlled-sequential-memory-allocation-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-04  
License: CC BY 4.0 with a link back

CVE-2026-18772 · Severity: medium · CVSS 6.5 · Published 2026-08-04

Improperly controlled sequential memory allocation vulnerability in Samsung Open Source rlottie allows Exponential Data Expansion.

Technologies: [Samsung Rlottie](https://junglewise.ai/threats/technologies/rlottie). Vendors: [Samsung](https://junglewise.ai/threats/vendors/samsung).

## Quick answers

**Is CVE-2026-18772 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-18772 being exploited in the wild.

**How severe is CVE-2026-18772?** Medium severity, with a CVSS score of 6.5, published 4 August 2026.

**Which products and versions are affected?** Samsung Rlottie. The advisory does not name versions.

**Is there a fix for CVE-2026-18772?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2026-18772?** Check whether you run Samsung Rlottie. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Samsung Rlottie

## Related threats

- [Samsung rlottie heap-based buffer overflow via environment variables](https://junglewise.ai/threats/cve-2026-108978-heap-based-buffer-overflow-vulnerability-in-samsung-opensource)
- [Samsung rLottie stack-based buffer overflow](https://junglewise.ai/threats/cve-2026-91826-samsung-rlottie-stack-based-buffer-overflow)
- [Samsung rLottie out-of-bounds read in stb_image](https://junglewise.ai/threats/cve-2026-49509-samsung-rlottie-out-of-bounds-read-in-stb-image)
- [Samsung rlottie uncontrolled recursion in shape group parsing](https://junglewise.ai/threats/cve-2026-82797-samsung-rlottie-uncontrolled-recursion-in-shape-group-parsing)
- [Samsung rlottie integer overflow to buffer overflow](https://junglewise.ai/threats/cve-2026-19588-samsung-rlottie-integer-overflow-to-buffer-overflow)