CVE-2026-1776 json
Camaleon CMS AWS Uploader Authenticated Path Traversal Arbitrary File Read
published 2026-03-09 8 mo ago modified 2026-11-08 19 h ago also EUVD-2026-10361 , GHSA-jw5g-f64p-6x78
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 57%
- public exploits
- 0
- none known
Summary
Camaleon CMS versions 2.4.5.0 through 2.9.0, prior to commit f54a77e, contain a path traversal vulnerability in the AWS S3 uploader implementation that allows authenticated users to read arbitrary files from the web server’s filesystem. The issue occurs in the download_private_file functionality when the application is configured to use the CamaleonCmsAwsUploader backend. Unlike the local uploader implementation, the AWS uploader does not validate file paths with valid_folder_path?, allowing directory traversal sequences to be supplied via the file parameter. As a result, any authenticated user, including low-privileged registered users, can access sensitive files such as /etc/passwd. This issue represents a bypass of the incomplete fix for CVE-2024-46987 and affects deployments using the AWS S3 storage backend.
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 8 mo ago
Exploit prediction
0.83% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.0 | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N |
| GitHub | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| CNA | 4.0 | 6.0 | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| rubygems | camaleon_cms | >=2.4.5.0, <=2.9.1 |
no fix listed |
Affected products
- owen2345 Camaleon CMS
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
-
github.com
/owen2345/camaleon-cms/pull/1127
issue-tracking, patch, web
-
github.com
/owen2345/camaleon-cms/commit/f54a77e2a7be601215ea1b396038c589a0cab9af
patch, web
-
vulncheck.com
/advisories/camaleon-cms-aws-uploader-authenticated-path-traversal-arbitrary-file-read
third-party-advisory, web, patch
-
camaleon.website
/
product
-
nvd.nist.gov
/vuln/detail/CVE-2026-1776
advisory
-
camaleon.website
web
-
github.com
/owen2345/camaleon-cms
package
-
github.com
/rubysec/ruby-advisory-db/blob/master/gems/camaleon_cms/CVE-2026-1776.yml
web
Sources
- CVE List CVE-2026-1776
- GitHub Advisory GHSA-jw5g-f64p-6x78
- NVD CVE-2026-1776
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.