Description
In Pylons Colander through 1.6, the URL validator allows an attacker to potentially cause an infinite loop thereby causing a denial of service via an unclosed parenthesis.
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.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | python-colander | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | python-colander | 2.0-1.3 | openSUSE-SU-2026:12004-1, openSUSE-SU-2024:14136-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | colander | < 1.7.0 | 1.7.0 | GHSA-rv95-4wxj-6fqq |
Advisories 2
- openSUSE-SU-2026:12004-1 python313-colander-2.0-2.4 on GA media SUSE / openSUSE Security Updates · Oct 5, 2026
- openSUSE-SU-2024:14136-1 python310-colander-2.0-1.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026