Files uploaded by anonymous users into a private file system can be accessed by other anonymous users
In Drupal core 8.x prior to 8.3.4 and Drupal core 7.x prior to 7.56; Private files that have been uploaded by an anonymous user but not permanently attached to content on the site should only be visible to the anonymous user that uploaded them, rather than all anonymous users. Drupal core did not previously provide this protection, allowing an access bypass vulnerability to occur. This issue is mitigated by the fact that in order to be affected, the site must allow anonymous users to upload files into a private file system.
- Published
- Jan 22, 2019
- Updated
- Jun 16, 2026
- EPSS
- 1.9% · 79th percentile
- CWE
- CWE-552
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Report tools
Action score
27
Monitor
Low priority for now.
- CVSS
- 26 / 40 · 6.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 1.9%
Affected systems
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux8.0
- debian debian linux9.0
- drupal drupal7.0 and later · before 7.56
- drupal drupal8.0.0 and later · before 8.3.4
Versions reported by the vendor
Affected version ranges reported by the assigning authority (drupal). Independent of NVD's CPE analysis and usually ahead of it.
Drupal Drupal Core
- Drupal 8 and later · before 8.3.3affected
- Drupal 7 and later · before 7.55affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:7 | drupal7 | before 7.14-2+deb7u16 | 7.14-2+deb7u16 |
| Debian:8 | drupal7 | before 7.32-1+deb8u9 | 7.32-1+deb8u9 |
| Debian:9 | drupal7 | before 7.52-2+deb9u1 | 7.52-2+deb9u1 |
| Packagist | drupal/core | from 7.0 · before 7.56 | 7.56 |
| Packagist | drupal/core | from 8.0 · before 8.3.4 | 8.3.4 |
| Packagist | drupal/drupal | from 7.0 · before 7.56 | 7.56 |
| Packagist | drupal/drupal | from 8.0 · before 8.3.4 | 8.3.4 |
Same product
drupal: all recordsOther highest-scoring records for the same primary product.
- CVE-2018-7602Drupal core - Highly critical - Remote Code Execution - SA-CORE-2018-004KEV99Now
- CVE-2018-7600Drupal before 7.58, 8.x before 8.3.9, 8.4.x before 8.4.6, and 8.5.x before 8.5.1 allows remote attackers to execute arbitrary code because oKEV99Now
- CVE-2019-6340Drupal core - Highly critical - Remote Code ExecutionKEV90Now
- CVE-2020-13671Drupal core does not properly sanitize certain filenames on uploaded files, which can lead to files being interpreted as the incorrect extenKEV76This week
- CVE-2026-9082Drupal core - Highly critical - SQL injection - SA-CORE-2026-004KEV74This week
- CVE-2014-3704The expandArguments function in the database abstraction API in Drupal core 7.x before 7.32 does not properly construct prepared statements,60This week
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:drupal7 | 7.14-2+deb7u16 · Debian:7 | Package registry (OSV) |
| Packagist:drupal/core | 7.56 | Package registry (OSV) |
| Packagist:drupal/core | 8.3.4 | Package registry (OSV) |
| Packagist:drupal/drupal | 7.56 | Package registry (OSV) |
| Packagist:drupal/drupal | 8.3.4 | 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.
No credits in the CNA record.
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
- Anyone who can reach it over the internet can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-552 · Files or Directories Accessible to External PartiesCVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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.
Attack patterns (CAPEC)
ATT&CK techniques
- OS Credential DumpingT1003
- Data from Network Shared DriveT1039
- Automated CollectionT1119
- Data from Information RepositoriesT1213
- Data from Cloud Storage ObjectT1530
- Unsecured Credentials: Credentials in FilesT1552.001
- Unsecured Credentials: Bash HistoryT1552.003
- Unsecured Credentials: Private KeysT1552.004
- Unsecured Credentials: Group Policy PreferencesT1552.006
- Credentials from Password StoresT1555
- Data from Configuration RepositoryT1602
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
- www.securityfocus.com/bid/99219
- www.securitytracker.com/id/1038781
- www.debian.org/security/2017/dsa-3897
- www.drupal.org/forum/newsletters/security-advisories-for-drupal-core/2017-06-21/drupal-core-multiple
Vendor advisories and official records. Exploit/PoC links are deliberately left out.