CVE-2021-21236
Publication date 6 January 2021
Last updated 11 July 2025
Ubuntu priority
Cvss 3 Severity Score
CairoSVG is a Python (pypi) package. CairoSVG is an SVG converter based on Cairo. In CairoSVG before version 2.5.1, there is a regular expression denial of service (REDoS) vulnerability. When processing SVG files, the python package CairoSVG uses two regular expressions which are vulnerable to Regular Expression Denial of Service (REDoS). If an attacker provides a malicious SVG, it can make cairosvg get stuck processing the file for a very long time. This is fixed in version 2.5.1. See Referenced GitHub advisory for more information.
Status
Package | Ubuntu Release | Status |
---|---|---|
cairosvg | 25.04 plucky |
Needs evaluation
|
24.04 LTS noble |
Needs evaluation
|
|
22.04 LTS jammy |
Needs evaluation
|
|
20.04 LTS focal |
Needs evaluation
|
|
18.04 LTS bionic |
Needs evaluation
|
|
16.04 LTS xenial |
Needs evaluation
|
|
14.04 LTS trusty | Not in release |
Severity score breakdown
Parameter | Value |
---|---|
Base score |
|
Attack vector | Network |
Attack complexity | Low |
Privileges required | Low |
User interaction | Required |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H |
References
Other references
- https://github.com/Kozea/CairoSVG/security/advisories/GHSA-hq37-853p-g5cf
- https://github.com/Kozea/CairoSVG/commit/063185b60588a41d4df661ad70f9f7b699901abc (2.5.1)
- https://github.com/Kozea/CairoSVG/commit/cfc9175e590531d90384aa88845052de53d94bf3
- https://github.com/Kozea/CairoSVG/releases/tag/2.5.1
- https://pypi.org/project/CairoSVG/
- https://www.cve.org/CVERecord?id=CVE-2021-21236