Description
Radicale before 1.1.2 and 2.x before 2.0.0rc2 is prone to timing oracles and simple brute-force attacks when using the htpasswd authentication method.
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 14 | radicale | 1.1.1+20160115-4 | — |
| Debian 13 | radicale | 1.1.1+20160115-4 | — |
| Debian 12 | radicale | 1.1.1+20160115-4 | — |
| Debian 8 | radicale | 0.9-1+deb8u2 | DLA-2187-1 |
| Debian 7 | radicale | 0.7-1.1+deb7u2 | DLA-934-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | radicale | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | radicale | < 1.1.2 | 1.1.2 | GHSA-rpv4-63g3-9x23 |
| PyPI | radicale | >= 2.0.0rc1, < 2.0.0rc2 | 2.0.0rc2 | GHSA-rpv4-63g3-9x23 |
Advisories 2
- DLA-934-1 radicale - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2187-1 radicale - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://github.com/Kozea/Radicale/blob/1.1.2/NEWS.rst
- https://github.com/Kozea/Radicale/commit/059ba8dec1f22ccbeab837e288b3833a099cee2d
- https://github.com/Kozea/Radicale/commit/190b1dd795f0c552a4992445a231da760211183b
- https://bugs.debian.org/861514
- [debian-lts-announce] 20200425 [SECURITY] [DLA 2187-1] radicale security update mailing-list