# CVE-2026-18289: OriginLab OriginPro out-of-bounds write in OPJ file parsing

Source: https://junglewise.ai/threats/cve-2026-18289-originlab-originpro-out-of-bounds-write-in-opj-file-parsing  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-20. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-18289 · Severity: high · CVSS 7.8 · Published 2026-08-20

OriginPro is a data analysis and visualization software suite used by researchers and engineers. A flaw in how it parses project files (.OPJ) allows attackers to execute arbitrary code if a user opens a malicious project file. This could lead to full compromise of the user's system and access to sensitive data or intellectual property.

Technologies: [OriginLab OriginPro](https://junglewise.ai/threats/technologies/originpro). Vendors: [OriginLab](https://junglewise.ai/threats/vendors/originlab).

## Quick answers

**Is CVE-2026-18289 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-18289 being exploited in the wild.

**How severe is CVE-2026-18289?** High severity, with a CVSS score of 7.8, published 20 August 2026.

**Which products and versions are affected?** OriginLab OriginPro 2026b SR0 and earlier.

**Is there a fix for CVE-2026-18289?** A patch was published on 2026-08-20: Fixed in OriginPro 2026b SR1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-18289 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-18289?** Check whether you run OriginLab OriginPro at an affected version. 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.

## Technical details

The vulnerability is an out-of-bounds write (buffer overflow) in the OPJ file parsing logic caused by insufficient validation of user-supplied data. Attack vector is local with user interaction required—the victim must open a specially crafted OPJ file. An attacker can leverage this to execute arbitrary code in the context of the current user. The vulnerability affects OriginPro versions 2026b SR0 and earlier; a fix is available in version 2026b SR1 and later.

## Affected products

- OriginLab OriginPro 2026b SR0 and earlier

## Timeline

- 2026-08-11: disclosed
- 2026-08-20: patched: Fixed in OriginPro 2026b SR1

## References

- [https://docs.originlab.com/cve/CVE-2026-18289](https://docs.originlab.com/cve/CVE-2026-18289)
- [https://www.zerodayinitiative.com/advisories/ZDI-26-548/](https://www.zerodayinitiative.com/advisories/ZDI-26-548/)

## Related threats

- [OriginLab OriginPro memory corruption in OGG file parsing](https://junglewise.ai/threats/cve-2026-18292-originlab-originpro-memory-corruption-in-ogg-file-parsing)
- [OriginLab OriginPro memory corruption in OGW file parsing](https://junglewise.ai/threats/cve-2026-18291-originlab-originpro-memory-corruption-in-ogw-file-parsing)
- [OriginLab OriginPro out-of-bounds write in OGG file parsing](https://junglewise.ai/threats/cve-2026-18290-originlab-originpro-out-of-bounds-write-in-ogg-file-parsing)
- [OriginLab OriginPro out-of-bounds write in OPJU file parsing](https://junglewise.ai/threats/cve-2026-18288-originlab-originpro-out-of-bounds-write-in-opju-file-parsing)