Description
php-svg-lib is an SVG file parsing / rendering library. Prior to version 0.5.1, when handling `<use>` tag that references an `<image>` tag, it merges the attributes from the `<use>` tag to the `<image>` tag. The problem pops up especially when the `href` attribute from the `<use>` tag has not been sanitized. This can lead to an unsafe file read that can cause PHAR Deserialization vulnerability in PHP prior to version 8. Version 0.5.1 contains a patch for this issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| dompdf | php-svg-lib | < 0.5.1 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 12 | php-dompdf-svg-lib | 0.5.0-3+deb12u1 | DSA-5642-1 |
Advisories 1
- DSA-5642-1 php-dompdf-svg-lib - security update Debian Security (DSA / DLA) · Mar 9, 2026