CVE-2026-25635 · cross-distro fix matrix

CVE-2026-25635: calibre is an e-book manager. Prior to 9.2.0, Calibre's CHM reader contains a path traversal vulnerability that allows arbitrary file writes anywhere the user has write permissions. On Windows (haven't tested on other OS's), this can lead to Remote Code Execution by writing a payload to the Startup

Affects 1 Linux release across 1 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2026-25635 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

calibre→ fixed in5.12.0+dfsg-1+deb11u4urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y calibre
```

Are YOU affected by CVE-2026-25635?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

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