# Grimmory-Tools Grimmory vulnerabilities

Source: https://junglewise.ai/threats/technologies/grimmory  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 11 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/grimmory.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 3 vulnerabilities in Grimmory-Tools Grimmory: 0 in the last 7 days and 2 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-93955, was published on 19 September 2026. Nothing in the last four weeks, down from 2 vulnerabilities in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 2
- All time: 3 (0 critical, 0 exploited in the wild)

## About Grimmory-Tools Grimmory

Library for memory management and data structure operations.

## Latest Grimmory-Tools Grimmory vulnerabilities

- [CVE-2026-93955: grimmory authorization bypass in Kobo download endpoint](https://junglewise.ai/threats/cve-2026-93955-a-vulnerability-was-detected-in-grimmory-tools-grimmory-up-to-3-3) (medium, CVSS 4.3, published 19 Sep 2026)
- [CVE-2026-93954: grimmory Settings API authorization bypass](https://junglewise.ai/threats/cve-2026-93954-a-security-vulnerability-has-been-detected-in-grimmory-tools) (medium, CVSS 4.3, published 19 Sep 2026)
- [CVE-2026-42451: Grimmory stored XSS in EPUB reader via insecure iframe sandbox](https://junglewise.ai/threats/cve-2026-42451-grimmory-stored-xss-in-epub-reader-via-insecure-iframe-sandbox) (medium, CVSS 6.3, published 8 May 2026)

## Most severe Grimmory-Tools Grimmory vulnerabilities

- [CVE-2026-42451: Grimmory stored XSS in EPUB reader via insecure iframe sandbox](https://junglewise.ai/threats/cve-2026-42451-grimmory-stored-xss-in-epub-reader-via-insecure-iframe-sandbox) (medium, CVSS 6.3, published 8 May 2026)
- [CVE-2026-93955: grimmory authorization bypass in Kobo download endpoint](https://junglewise.ai/threats/cve-2026-93955-a-vulnerability-was-detected-in-grimmory-tools-grimmory-up-to-3-3) (medium, CVSS 4.3, published 19 Sep 2026)
- [CVE-2026-93954: grimmory Settings API authorization bypass](https://junglewise.ai/threats/cve-2026-93954-a-security-vulnerability-has-been-detected-in-grimmory-tools) (medium, CVSS 4.3, published 19 Sep 2026)

## Vulnerabilities per week

Nothing in the last four weeks, down from 2 vulnerabilities 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 | 2 | 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 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## 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, "Grimmory-Tools Grimmory vulnerabilities", https://junglewise.ai/threats/technologies/grimmory, 11 November 2026.