OS command injection in odt2spip plugin for SPIP via document filename
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.
Summary
The odt2spip plugin for SPIP before 4.4.0 contains an OS command injection flaw (CWE-78) that lets authenticated authors run arbitrary commands by uploading a document with a crafted filename through the document import form. Shell metacharacters in a non-.odt filename are not sufficiently sanitized before the LibreOffice conversion runs, so an attacker with author access can execute commands as the web-server user.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
odt2spip plugin for SPIP before 4.4.0 contains an OS command injection vulnerability that allows authenticated authors to execute arbitrary commands by uploading a document with a maliciously crafted filename through the document import form. Attackers can embed shell metacharacters such as $(id) in a non-.odt filename, which survives insufficient sanitization in odt2spip_deplacer_fichier_upload() and LibreOffice::createCommand(), to achieve remote code execution as the web-server user during the LibreOffice conversion process.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Update odt2spip to version 4.4.0 or later, which fixes the issue.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
- Fix · CNA odt2spip (odt2spip) Fixed in 4.4.0
Timeline
- 2026-10-13 Threatist record created from CVE-2026-104085
- 2026-10-13 Alias added: GHSA-87r4-r3m7-gvjv
- 2026-10-14 Priority changed: LOW → MEDIUM
- 2026-10-29 Fix available: odt2spip/[email protected] · CNA
References
Patch 1
Sources
- CVE-2026-104085 · CVE Program
- CVE-2026-104085 · NVD
- FIRST EPSS
- GHSA-87r4-r3m7-gvjv · GitHub Advisory Database · CC BY 4.0
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