# Open Quantum Safe vulnerabilities

Source: https://junglewise.ai/threats/vendors/open-quantum-safe  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/vendors/open-quantum-safe.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 5 vulnerabilities in Open Quantum Safe: 3 in the last 7 days and 3 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-47738, was published on 6 November 2026. 3 vulnerabilities in the last four weeks, up from none in the four before. 1 technology has a page of its own.

## Counts

- Last 7 days: 3
- Last 30 days: 3
- Last 90 days: 3
- All time: 5 (0 critical, 0 exploited in the wild)

## About Open Quantum Safe

The Open Quantum Safe project is an open-source project that aims to support the development and prototyping of quantum-resistant cryptography.

## Latest Open Quantum Safe vulnerabilities

- [CVE-2026-47738: liboqs uninitialized pointer dereference in NTRU KEM encaps_derand](https://junglewise.ai/threats/cve-2026-47738-liboqs-is-a-c-language-cryptographic-library-that-provides) (medium, CVSS 5.3, published 6 Nov 2026)
- [CVE-2026-44519: Open Quantum Safe liboqs FrodoKEM cache timing in ct_select](https://junglewise.ai/threats/cve-2026-44519-liboqs-is-a-c-language-cryptographic-library-that-provides) (medium, CVSS 5.1, published 6 Nov 2026)
- [CVE-2026-104254: liboqs out-of-bounds read in HSS/LMS signature verification](https://junglewise.ai/threats/cve-2026-104254-liboqs-is-a-c-language-cryptographic-library-that-provides) (medium, CVSS 5.3, published 6 Nov 2026)
- [CVE-2026-46344: Open Quantum Safe liboqs out-of-bounds read in XMSS verification](https://junglewise.ai/threats/cve-2026-46344-open-quantum-safe-liboqs-out-of-bounds-read-in-xmss-verification) (medium, CVSS 5.3, published 29 May 2026)
- [CVE-2026-44518: open-quantum-safe liboqs out-of-bounds read in XMSS verification](https://junglewise.ai/threats/cve-2026-44518-open-quantum-safe-liboqs-out-of-bounds-read-in-xmss-verification) (medium, CVSS 5.3, published 29 May 2026)

## Most severe Open Quantum Safe vulnerabilities

- [CVE-2026-47738: liboqs uninitialized pointer dereference in NTRU KEM encaps_derand](https://junglewise.ai/threats/cve-2026-47738-liboqs-is-a-c-language-cryptographic-library-that-provides) (medium, CVSS 5.3, published 6 Nov 2026)
- [CVE-2026-104254: liboqs out-of-bounds read in HSS/LMS signature verification](https://junglewise.ai/threats/cve-2026-104254-liboqs-is-a-c-language-cryptographic-library-that-provides) (medium, CVSS 5.3, published 6 Nov 2026)
- [CVE-2026-46344: Open Quantum Safe liboqs out-of-bounds read in XMSS verification](https://junglewise.ai/threats/cve-2026-46344-open-quantum-safe-liboqs-out-of-bounds-read-in-xmss-verification) (medium, CVSS 5.3, published 29 May 2026)
- [CVE-2026-44518: open-quantum-safe liboqs out-of-bounds read in XMSS verification](https://junglewise.ai/threats/cve-2026-44518-open-quantum-safe-liboqs-out-of-bounds-read-in-xmss-verification) (medium, CVSS 5.3, published 29 May 2026)
- [CVE-2026-44519: Open Quantum Safe liboqs FrodoKEM cache timing in ct_select](https://junglewise.ai/threats/cve-2026-44519-liboqs-is-a-c-language-cryptographic-library-that-provides) (medium, CVSS 5.1, published 6 Nov 2026)

## Vulnerabilities per week

3 vulnerabilities in the last four weeks, up from none in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 3 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Open Quantum Safe technologies

- [Open Quantum Safe Liboqs](https://junglewise.ai/threats/technologies/liboqs): 5 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Open Quantum Safe vulnerabilities", https://junglewise.ai/threats/vendors/open-quantum-safe, 9 November 2026.