mongofiles may write outside the working directory through a symlink
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
- Exploited
- No known exploitation
- Fix
- Fixed in 100.20.1
- Who is exposed
- Not reported
Do first: Upgrade to a fixed version: 100.20.1.
- Exploitation0/40No signal
- Exposure?/25Exposure: unknown (data gap). No advisory context yet
- Reach?/20Reach: unknown (data gap). No tracked technology or package matched
- Severity1/10CVSS 1.0
- No patch0/5No signal
What would change the score
- Would score about 56 if added to CISA KEV
- Would score about 51 if CISA's SSVC rates exploitation active
- Would score about 23 if advisories confirm default setups are exposed
CVE-2026-119673 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 1.0 (low) and affects Database Tools; fixed in 100.20.1.
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- Published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 1/100 · provisional
- Fix
- Fixed in 100.20.1
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
The mongofiles utility in MongoDB Database Tools is affected. An unauthorized user who can upload a GridFS file and plant a symlink in the operator's download directory could cause mongofiles to write a file containing that user's data to a location outside the intended directory, with the operator's filesystem permissions.
Read the original description
MongoDB Database Tools mongofiles does not resolve existing parent-directory symlinks when validating output paths for get_regex. An unauthorized user who can both upload a GridFS file and place a symlink in the operator's download working directory can cause a later retrieval to create a file containing unauthorized user-controlled data outside that directory, using the operator process's filesystem permissions. The issue can occur with default traversal and overwrite settings. Exploitation requires an operator to retrieve matching files from the affected working directory; the demonstrated default behavior creates a new file rather than overwriting an existing file. This issue affects MongoDB Database Tools versions 100.2.0 through versions before 100.20.1.
What to do
Upgrade to a fixed version: 100.20.1.
Timeline
- CVE published
- First seen by cve.now
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- MongoDB Database Tools
From 100.2.0 · fixed in 100.20.1
Evidence 1
- Repository
Corrections
None so far.
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Questions about CVE-2026-119673
Is CVE-2026-119673 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
Which versions are affected by CVE-2026-119673?
Database Tools: from 100.2.0 before 100.20.1.Source: cve.now feed data
How do I fix CVE-2026-119673?
Upgrade to a fixed version: 100.20.1.Source: cve.now feed data