CVE-2017-16907

In Horde Groupware 5.2.19 and 5.2.21, there is XSS via the Color field in a Create Task List action.

5.4 MediumFix available

In Horde Groupware 5.2.19 and 5.2.21, there is XSS via the Color field in a Create Task List action.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

1.08%Unchanged since Apr 14, 2021

What each source reports

NVD Score used 5.4

In Horde Groupware 5.2.19 and 5.2.21, there is XSS via the Color field in a Create Task List action.

Record: CVE-2017-16907
CVSS 3.0: 5.4 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0: 3.5 LowAV:N/AC:M/Au:S/C:N/I:P/A:N
Weakness: CWE-79
Updated: 2026-11-02

CVE List No score

In Horde Groupware 5.2.19 and 5.2.21, there is XSS via the Color field in a Create Task List action.

Record: CVE-2017-16907
Updated: 2026-11-02

EUVDEUVD-2017-8077 No score

In Horde Groupware 5.2.19 and 5.2.21, there is XSS via the Color field in a Create Task List action.

Record: EUVD-2017-8077
Updated: 2026-11-03

GitHub AdvisoriesGHSA-mfv6-g85c-7863 5.4

In Horde Groupware 5.2.19 and 5.2.21, there is XSS via the Color field in a Create Task List action.

In Horde Groupware 5.2.19 and 5.2.21, there is XSS via the Color field in a Create Task List action.

Record: GHSA-mfv6-g85c-7863
CVSS 3.0: 5.4 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSV 5.4

In Horde Groupware 5.2.19 and 5.2.21, there is XSS via the Color field in a Create Task List action.

Record: CVE-2017-16907
CVSS 3.0: 5.4 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-02

OSVDEBIAN-CVE-2017-16907 5.4

In Horde Groupware 5.2.19 and 5.2.21, there is XSS via the Color field in a Create Task List action.

Record: DEBIAN-CVE-2017-16907
CVSS 3.0: 5.4 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-02

OSVUBUNTU-CVE-2017-16907 5.4

In Horde Groupware 5.2.19 and 5.2.21, there is XSS via the Color field in a Create Task List action.

Record: UBUNTU-CVE-2017-16907
CVSS 3.0: 5.4 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-02

Affected products

horde groupware

Affected packages

Affected packages
Package	Affected	Fixed
`php-horde` Debian:12	before 5.2.18+debian0-1	5.2.18+debian0-1
`php-horde-core` Debian:12	before 2.31.3+debian0-1, plus listed versions 1.8.3-11.8.3-1.12.0.4-12.1.0-12.1.1-1 Show 16 moreShow less 2.1.3-12.1.4-12.1.4-22.1.5-12.10.1-12.10.2-12.11.1+dfsg0-12.11.1-12.11.1-22.4.3-12.5.0-12.6.0-12.6.6-12.7.0-12.8.0-12.9.0-1	2.31.3+debian0-1
`php-horde` Debian:8	before 5.2.1+debian0-2+deb8u4, plus listed versions 5.2.1+debian0-2+deb8u15.2.1+debian0-2+deb8u25.2.1+debian0-2+deb8u3	5.2.1+debian0-2+deb8u4
`php-horde-core` Debian:8	before 2.15.0+debian0-1+deb8u2, plus listed versions 2.15.0+debian0-1+deb8u1	2.15.0+debian0-1+deb8u2
`php-horde-core` Debian:9	before 2.27.6+debian1-2+deb9u1	2.27.6+debian1-2+deb9u1
`php-horde` Debian:9	before 5.2.13+debian0-1+deb9u3, plus listed versions 5.2.13+debian0-1+deb9u15.2.13+debian0-1+deb9u2	5.2.13+debian0-1+deb9u3
`php-horde-core` Ubuntu:Pro:14.04:LTS	All versions, plus listed versions 2.7.0-12.11.1-12.11.1-22.11.1-2ubuntu0.1~esm1	None known
`php-horde` Ubuntu:16.04:LTS	All versions, plus listed versions 5.2.7+debian0-15.2.8+debian0-15.2.9+debian0-15.2.9+debian0-1build1	None known
`php-horde-core` Ubuntu:16.04:LTS	All versions, plus listed versions 2.20.8+debian0-12.22.1+debian0-12.22.3+debian0-12.22.4+debian0-12.22.5+debian0-12.22.6+debian0-12.22.6+debian0-1ubuntu1	None known
`php-horde` Ubuntu:18.04:LTS	All versions, plus listed versions 5.2.16+debian0-15.2.17+debian0-1	None known
`php-horde-core` Ubuntu:18.04:LTS	All versions, plus listed versions 2.30.0+debian0-12.30.2+debian0-12.31.1+debian0-1ubuntu1	None known

History

History
Recorded	Changed	Sources
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.

In short

CVE-2017-16907 is a medium vulnerability (CVSS 5.4) in Horde Groupware, published November 20, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.08%, the 65th percentile. Fixed in php-horde 5.2.18+debian0-1.

Attack profile

How easy it is to exploit

What an attacker can affect

Exploit likelihood

What each source reports

Affected products

Affected packages

History

In short

References