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Fencer Vulns
high 7.8

CVE-2019-9852 json

Insufficient URL encoding flaw in allowed script location check

published 2019-08-15 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-19208

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-2018-16858, to avoid a directory traversal attack where scripts in arbitrary locations on the file system could be executed. However this new protection could be bypassed by a URL encoding attack. In the fixed versions, the parsed url describing the script location is correctly encoded before further processing. This issue affects: Document Foundation LibreOffice versions prior to 6.2.6.

Patch / fix

  • Document Foundation LibreOffice 6.2.6
  • libreoffice Debian 14, Debian 13, Debian 12 1:6.3.0-1

debian advisories DEBIAN-CVE-2019-9852

  • libreoffice Ubuntu 16.04 LTS 1:5.1.6~rc2-0ubuntu1~xenial9
  • libreoffice Ubuntu 18.04 LTS 1:6.0.7-0ubuntu0.18.04.9

ubuntu advisories UBUNTU-CVE-2019-9852

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 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
  • libreoffice SLE Workstation Extension 15 6.2.6.2-3.21.1

suse advisories SUSE-SU-2019:2402-1SUSE-SU-2019:2401-1SUSE-SU-2019:2231-1

  • libreoffice openSUSE Leap 15.1 6.2.7.1-lp151.3.6.1
  • libreoffice openSUSE Leap 15.0 6.2.6.2-lp150.2.16.1

opensuse advisories openSUSE-SU-2019:2183-1openSUSE-SU-2019:2057-1

  • libreoffice Alpine 3.10 6.2.6.2-r0
  • libreoffice Alpine 3.24, Alpine 3.23, Alpine 3.22 +11 more 6.3.0.4-r0

alpine advisories ALPINE-CVE-2019-9852

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-2019-9852 updated cvss 7.8

libreoffice: Insufficient URL encoding 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

1.75% 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-116 Improper Encoding or Escaping of Output
  • 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.