Insufficient URL encoding flaw in allowed script location check
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.
- Published
- Aug 15, 2019
- Updated
- Jun 16, 2026
- EPSS
- 1.8% · 77th percentile
- CWE
- CWE-116
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Report tools
Action score
32
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 1.8%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| libreoffice | libreoffice | cpe:2.3:a:libreoffice:libreoffice |
| canonical | ubuntu linux | cpe:2.3:o:canonical:ubuntu_linux |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
| opensuse | leap | cpe:2.3:o:opensuse:leap |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- canonical ubuntu linux16.04
- canonical ubuntu linux18.04
- canonical ubuntu linux19.04
- debian debian linux10.0
- debian debian linux8.0
- debian debian linux9.0
- fedoraproject fedora29
- libreoffice libreofficebefore 6.2.6
- opensuse leap15.0
- opensuse leap15.1
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Document Fdn.). Independent of NVD's CPE analysis and usually ahead of it.
Document Foundation LibreOffice
- unspecified and later · before 6.2.6affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:10 | libreoffice | before 1:6.1.5-3+deb10u3 | 1:6.1.5-3+deb10u3 |
| Debian:12 | libreoffice | before 1:6.3.0-1 | 1:6.3.0-1 |
| Debian:8 | libreoffice | before 1:4.3.3-2+deb8u13 | 1:4.3.3-2+deb8u13 |
| Debian:9 | libreoffice | before 1:5.2.7-1+deb9u10 | 1:5.2.7-1+deb9u10 |
| openSUSE:Leap 15.0 | libreoffice | before 6.2.6.2-lp150.2.16.1 | 6.2.6.2-lp150.2.16.1 |
| openSUSE:Leap 15.1 | libreoffice | before 6.2.7.1-lp151.3.6.1 | 6.2.7.1-lp151.3.6.1 |
| Red Hat:enterprise_linux:7::client | autocorr-af | before 1:5.3.6.1-24.el7 | 1:5.3.6.1-24.el7 |
| Red Hat:enterprise_linux:7::client | autocorr-bg | before 1:5.3.6.1-24.el7 | 1:5.3.6.1-24.el7 |
| Red Hat:enterprise_linux:7::client | autocorr-ca | before 1:5.3.6.1-24.el7 | 1:5.3.6.1-24.el7 |
| Red Hat:enterprise_linux:7::client | autocorr-cs | before 1:5.3.6.1-24.el7 | 1:5.3.6.1-24.el7 |
| Red Hat:enterprise_linux:7::client | autocorr-da | before 1:5.3.6.1-24.el7 | 1:5.3.6.1-24.el7 |
| Red Hat:enterprise_linux:7::client | autocorr-de | before 1:5.3.6.1-24.el7 | 1:5.3.6.1-24.el7 |
| Red Hat:enterprise_linux:7::client | autocorr-en | before 1:5.3.6.1-24.el7 | 1:5.3.6.1-24.el7 |
| Red Hat:enterprise_linux:7::client | autocorr-es | before 1:5.3.6.1-24.el7 | 1:5.3.6.1-24.el7 |
| Red Hat:enterprise_linux:7::client | autocorr-fa | before 1:5.3.6.1-24.el7 | 1:5.3.6.1-24.el7 |
| Red Hat:enterprise_linux:7::client | autocorr-fi | before 1:5.3.6.1-24.el7 | 1:5.3.6.1-24.el7 |
| Red Hat:enterprise_linux:7::client | autocorr-fr | before 1:5.3.6.1-24.el7 | 1:5.3.6.1-24.el7 |
| Red Hat:enterprise_linux:7::client | autocorr-ga | before 1:5.3.6.1-24.el7 | 1:5.3.6.1-24.el7 |
| Red Hat:enterprise_linux:7::client | autocorr-hr | before 1:5.3.6.1-24.el7 | 1:5.3.6.1-24.el7 |
| Red Hat:enterprise_linux:7::client | autocorr-hu | before 1:5.3.6.1-24.el7 | 1:5.3.6.1-24.el7 |
| Red Hat:enterprise_linux:7::client | autocorr-is | before 1:5.3.6.1-24.el7 | 1:5.3.6.1-24.el7 |
| Red Hat:enterprise_linux:7::client | autocorr-it | before 1:5.3.6.1-24.el7 | 1:5.3.6.1-24.el7 |
| Red Hat:enterprise_linux:7::client | autocorr-ja | before 1:5.3.6.1-24.el7 | 1:5.3.6.1-24.el7 |
| Red Hat:enterprise_linux:7::client | autocorr-ko | before 1:5.3.6.1-24.el7 | 1:5.3.6.1-24.el7 |
+96
Same product
libreoffice: all recordsOther highest-scoring records for the same primary product.
- CVE-2019-9851LibreLogo global-event script execution62This week
- CVE-2018-16858It was found that libreoffice before versions 6.0.7 and 6.1.3 was vulnerable to a directory traversal attack which could be used to execute 59Plan
- CVE-2018-10583An information disclosure vulnerability occurs when LibreOffice 6.0.3 and Apache OpenOffice Writer 4.1.5 automatically process and initiate 54Plan
- CVE-2019-9848LibreOffice has a feature where documents can specify that pre-installed scripts can be executed on various document events such as mouse-ov48Plan
- CVE-2018-6871LibreOffice before 5.4.5 and 6.x before 6.0.1 allows remote attackers to read arbitrary files via =WEBSERVICE calls in a document, which use46Plan
- CVE-2023-1183Arbitrary file write41Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:libreoffice | 1:6.3.0-1 · Debian:12 | Package registry (OSV) |
| opensuse:libreoffice | 6.2.6.2-lp150.2.16.1 · openSUSE:Leap 15.0 | Package registry (OSV) |
| red hat:autocorr-af | 1:5.3.6.1-24.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:autocorr-bg | 1:5.3.6.1-24.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:autocorr-ca | 1:5.3.6.1-24.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:autocorr-cs | 1:5.3.6.1-24.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:autocorr-da | 1:5.3.6.1-24.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:autocorr-de | 1:5.3.6.1-24.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:autocorr-en | 1:5.3.6.1-24.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:autocorr-es | 1:5.3.6.1-24.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:autocorr-fa | 1:5.3.6.1-24.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:autocorr-fi | 1:5.3.6.1-24.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:autocorr-fr | 1:5.3.6.1-24.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:autocorr-ga | 1:5.3.6.1-24.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| suse:libreoffice | 6.2.6.2-3.21.1 · SUSE:Linux Enterprise Workstation Extension 15 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- Nils EmmerichERNW Research GmbH for discovering and reporting this issue
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-116 · Improper Encoding or Escaping of OutputCVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- lists.opensuse.org/opensuse-security-announce/2019-09/msg00006.html
- lists.opensuse.org/opensuse-security-announce/2019-09/msg00067.html
- lists.debian.org/debian-lts-announce/2019/10/msg00005.html
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PMEGUWMWORC3DOVEHVXLFT3A5RSCMLBH/
- seclists.org/bugtraq/2019/Aug/28
- seclists.org/bugtraq/2019/Sep/17
- usn.ubuntu.com/4102-1/
- www.debian.org/security/2019/dsa-4501
- www.libreoffice.org/about-us/security/advisories/CVE-2019-9852
Vendor advisories and official records. Exploit/PoC links are deliberately left out.