Skip to content
Fencer Vulns
high 7.8

CVE-2019-9854 json

Unsafe URL assembly flaw in allowed script location check

published 2019-09-06 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-19210

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits
0
none known

Summary

LibreOffice has a feature where documents can specify that pre-installed macros can be executed on various script events such as mouse-over, document-open etc. Access is intended to be restricted to scripts under the share/Scripts/python, user/Scripts/python sub-directories of the LibreOffice install. Protection was added, to address CVE-2019-9852, to avoid a directory traversal attack where scripts in arbitrary locations on the file system could be executed by employing a URL encoding attack to defeat the path verification step. However this protection could be bypassed by taking advantage of a flaw in how LibreOffice assembled the final script URL location directly from components of the passed in path as opposed to solely from the sanitized output of the path verification step. This issue affects: Document Foundation LibreOffice 6.2 versions prior to 6.2.7; 6.3 versions prior to 6.3.1.

Patch / fix

  • Document Foundation LibreOffice 6.2.7, 6.3.1
  • libreoffice Debian 14, Debian 13, Debian 12 1:6.3.1~rc2-1

debian advisories DEBIAN-CVE-2019-9854

  • libreoffice Ubuntu 16.04 LTS 1:5.1.6~rc2-0ubuntu1~xenial10
  • libreoffice Ubuntu 18.04 LTS 1:6.0.7-0ubuntu0.18.04.10

ubuntu advisories UBUNTU-CVE-2019-9854

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libreoffice RHEL 8 1:6.0.6.1-20.el8
  • autocorr-af RHEL 8 1:6.0.6.1-20.el8
  • autocorr-bg RHEL 8 1:6.0.6.1-20.el8
  • autocorr-ca RHEL 8 1:6.0.6.1-20.el8
  • autocorr-cs RHEL 8 1:6.0.6.1-20.el8
  • autocorr-da RHEL 8 1:6.0.6.1-20.el8
  • autocorr-de RHEL 8 1:6.0.6.1-20.el8
  • autocorr-en RHEL 8 1:6.0.6.1-20.el8

red hat advisories RHSA-2020:1598RHSA-2020:1151

  • libreoffice SLE Workstation Extension 15 6.2.7.1-3.24.4
  • libreoffice SLE Workstation Extension 15 SP1 6.2.7.1-8.10.1
  • libreoffice SLED 12 SP4, SLE Workstation Extension 12 SP4, SLE Software Development Kit 12 SP4 6.2.7.1-43.56.3

suse advisories SUSE-SU-2019:2686-1SUSE-SU-2019:2402-1SUSE-SU-2019:2401-1

  • libreoffice openSUSE Tumbleweed 7.1.5.2-3.13
  • libreoffice openSUSE Leap 15.0 6.2.7.1-lp150.2.19.1
  • libreoffice openSUSE Leap 15.1 6.2.7.1-lp151.3.6.1

opensuse advisories openSUSE-SU-2024:10983-1openSUSE-SU-2019:2361-1openSUSE-SU-2019:2183-1

  • libreoffice Alpine 3.10 6.2.7.1-r0
  • libreoffice Alpine 3.24, Alpine 3.23, Alpine 3.22 +11 more 6.3.1.2-r0

alpine advisories ALPINE-CVE-2019-9854

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-9854 updated cvss 7.8

libreoffice: Unsafe URL assembly flaw in allowed script location check

  • Red Hat Enterprise Linux 6 autocorr-af, autocorr-bg, autocorr-ca, autocorr-cs, autocorr-da, autocorr-de, +60 more
    affected: no fix planned “Out of support scope”
  • Red Hat CodeReady Linux Builder (v. 8) libreoffice-sdk 6.0.6.1-20.el8, libreoffice-x11 6.0.6.1-20.el8, libreoffice-gtk2 6.0.6.1-20.el8 Red Hat Enterprise Linux AppStream (v. 8) autocorr-af 6.0.6.1-20.el8, autocorr-bg 6.0.6.1-20.el8, autocorr-ca 6.0.6.1-20.el8, autocorr-cs 6.0.6.1-20.el8, autocorr-da 6.0.6.1-20.el8, autocorr-de 6.0.6.1-20.el8, +96 more
    fixed: vendor fix RHSA-2020:1598
  • Red Hat Enterprise Linux Client (v. 7) autocorr-af 5.3.6.1-24.el7, autocorr-bg 5.3.6.1-24.el7, autocorr-ca 5.3.6.1-24.el7, autocorr-cs 5.3.6.1-24.el7, autocorr-da 5.3.6.1-24.el7, autocorr-de 5.3.6.1-24.el7, +51 more Red Hat Enterprise Linux Client Optional (v. 7) libreoffice 5.3.6.1-24.el7, libreoffice-bsh 5.3.6.1-24.el7, libreoffice-sdk 5.3.6.1-24.el7, libreoffice-glade 5.3.6.1-24.el7, libreoffice-rhino 5.3.6.1-24.el7, libreoffice-help-ar 5.3.6.1-24.el7, +48 more Red Hat Enterprise Linux Server Optional (v. 7) autocorr-af 5.3.6.1-24.el7, autocorr-bg 5.3.6.1-24.el7, autocorr-ca 5.3.6.1-24.el7, autocorr-cs 5.3.6.1-24.el7, autocorr-da 5.3.6.1-24.el7, autocorr-de 5.3.6.1-24.el7, +104 more Red Hat Enterprise Linux Workstation (v. 7) autocorr-af 5.3.6.1-24.el7, autocorr-bg 5.3.6.1-24.el7, autocorr-ca 5.3.6.1-24.el7, autocorr-cs 5.3.6.1-24.el7, autocorr-da 5.3.6.1-24.el7, autocorr-de 5.3.6.1-24.el7, +51 more Red Hat Enterprise Linux Workstation Optional (v. 7) libreoffice 5.3.6.1-24.el7, libreoffice-bsh 5.3.6.1-24.el7, libreoffice-sdk 5.3.6.1-24.el7, libreoffice-glade 5.3.6.1-24.el7, libreoffice-rhino 5.3.6.1-24.el7, libreoffice-help-ar 5.3.6.1-24.el7, +48 more
    fixed: vendor fix RHSA-2020:1151

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.76% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • Document Foundation LibreOffice

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.