CVE-2017-8342

Radicale is vulnerable to timing oracles and simple bruteforce attacks

8.1 HighFix available

CVE-2017-8342 is a high vulnerability (CVSS 8.1) in Radicale, published April 30, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.02%, the 81st percentile. Fixed in radicale 1.1.2.

What does this mean?

Severity: 8.1 HighCVSS 3.0, NVD
Exploit chance: 2.02%EPSS, 81st percentile
Exploitation: None knownNot on CISA’s or ENISA’s lists
Fixed in: 1.1.2radicale +11 more

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

2.02%Up 0.8 points since Apr 14, 2021

Affected products

radicale

Affected packages

Affected packages
Package	Affected	Fixed
`radicale` PyPI	before 1.1.2	1.1.2
`radicale` PyPI	2.0.0rc1 to 2.0.0rc1	2.0.0rc2
`radicale` Debian:12	before 1.1.1+20160115-4	1.1.1+20160115-4
`radicale` Debian:13	before 1.1.1+20160115-4	1.1.1+20160115-4
`radicale` Debian:14	before 1.1.1+20160115-4	1.1.1+20160115-4
`radicale` Debian:8	before 0.9-1+deb8u2, plus listed versions 0.9-10.9-1+deb8u1	0.9-1+deb8u2
`radicale` Debian:7	before 0.7-1.1+deb7u2, plus listed versions 0.7-1.10.7-1.1+deb7u1	0.7-1.1+deb7u2
`radicale` PyPI	before 1.1.2, plus listed versions 0.100.20.30.40.5 Show 15 moreShow less 0.60.6.10.6.20.6.30.6.40.70.7.10.80.90.9b10.9b21.01.0.11.11.1.1	1.1.2
`radicale` PyPI	2.0.0rc1 up to 2.0.0rc2	2.0.0rc2
`radicale` Mageia:5	before 1.1.1-1.2.mga5	1.1.1-1.2.mga5
`radicale` PyPI	before 1.1.2, plus listed versions 0.100.20.30.40.5 Show 18 moreShow less 0.60.6.10.6.20.6.30.6.40.70.7.10.80.90.9b10.9b21.01.0.11.11.1.12.0.0rc1archive/1.0.x0.1	1.1.2
`radicale` Ubuntu:Pro:16.04:LTS	before 1.1.1-1ubuntu0.1~esm1, plus listed versions 0.10-21.0-11.0.1-11.0.1-21.1.1-1	1.1.1-1ubuntu0.1~esm1

What each source reports

NVD Score used8.1

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.

Record: CVE-2017-8342
CVSS 3.0: 8.1 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:P/I:N/A:N
Weakness: CWE-362
Updated: 2026-11-02

CVE ListNo score

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.

Record: CVE-2017-8342
Updated: 2026-11-02

EUVDEUVD-2017-0110No score

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.

Record: EUVD-2017-0110
Updated: 2026-11-03

GitHub AdvisoriesGHSA-rpv4-63g3-9x238.1

Radicale is vulnerable to timing oracles and simple bruteforce attacks

Radicale before 1.1.2 and 2.0.0rc1 is prone to timing oracles and simple brute-force attacks when using the htpasswd authentication method.

Record: GHSA-rpv4-63g3-9x23
CVSS 3.1: 8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-362
Updated: 2026-11-02

OSV8.1

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.

Record: CVE-2017-8342
CVSS 3.0: 8.1 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2017-83428.1

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.

Record: DEBIAN-CVE-2017-8342
CVSS 3.0: 8.1 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Show 5 moreShow less

OSVGHSA-rpv4-63g3-9x238.1

Radicale is vulnerable to timing oracles and simple bruteforce attacks

Radicale before 1.1.2 and 2.0.0rc1 is prone to timing oracles and simple brute-force attacks when using the htpasswd authentication method.

Record: GHSA-rpv4-63g3-9x23
CVSS 3.1: 8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-362
Updated: 2026-11-02

OSVUBUNTU-CVE-2017-83428.1

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.

Record: UBUNTU-CVE-2017-8342
CVSS 3.0: 8.1 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-13

OSVMGASA-2017-0140No score

Updated radicale package fixes security vulnerability

Radicale before 1.1.2 is prone to timing oracles and simple brute-force attacks when using the htpasswd authentication method (CVE-2017-8342).

Record: MGASA-2017-0140
Updated: 2026-11-02

OSVPYSEC-2017-102No score

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.

Record: PYSEC-2017-102
Updated: 2026-11-02

OSVUSN-9084-1No score

radicale vulnerability

It was discovered that Radicale did not delay failed authentication attempts when using htpasswd authentication. A remote attacker could possibly use this issue to obtain user passwords through timing or brute-force attacks.

Record: USN-9084-1
Updated: 2026-11-13

History

History
Recorded	Changed	Sources
Nov 13, 2026	affected, aliases	OSV
Nov 13, 2026	affected, references	OSV
Nov 10, 2026	facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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