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Vulnerability details: VCID-jcrg-ej53-zfeg
Vulnerability ID VCID-jcrg-ej53-zfeg
Aliases CVE-2026-1776
GHSA-jw5g-f64p-6x78
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.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00076 https://api.first.org/data/v1/epss?cve=CVE-2026-1776
epss 0.00076 https://api.first.org/data/v1/epss?cve=CVE-2026-1776
epss 0.00076 https://api.first.org/data/v1/epss?cve=CVE-2026-1776
epss 0.00076 https://api.first.org/data/v1/epss?cve=CVE-2026-1776
cvssv3.1 6.5 https://camaleon.website
cvssv4 6.0 https://camaleon.website
generic_textual MODERATE https://camaleon.website
cvssv4 6 https://camaleon.website/
ssvc Track https://camaleon.website/
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-jw5g-f64p-6x78
cvssv3.1 6.5 https://github.com/owen2345/camaleon-cms
cvssv4 6.0 https://github.com/owen2345/camaleon-cms
generic_textual MODERATE https://github.com/owen2345/camaleon-cms
cvssv3.1 6.5 https://github.com/owen2345/camaleon-cms/commit/f54a77e2a7be601215ea1b396038c589a0cab9af
cvssv4 6 https://github.com/owen2345/camaleon-cms/commit/f54a77e2a7be601215ea1b396038c589a0cab9af
cvssv4 6.0 https://github.com/owen2345/camaleon-cms/commit/f54a77e2a7be601215ea1b396038c589a0cab9af
generic_textual MODERATE https://github.com/owen2345/camaleon-cms/commit/f54a77e2a7be601215ea1b396038c589a0cab9af
ssvc Track https://github.com/owen2345/camaleon-cms/commit/f54a77e2a7be601215ea1b396038c589a0cab9af
cvssv3.1 6.5 https://github.com/owen2345/camaleon-cms/pull/1127
cvssv4 6 https://github.com/owen2345/camaleon-cms/pull/1127
cvssv4 6.0 https://github.com/owen2345/camaleon-cms/pull/1127
generic_textual MODERATE https://github.com/owen2345/camaleon-cms/pull/1127
ssvc Track https://github.com/owen2345/camaleon-cms/pull/1127
cvssv3.1 6.5 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/camaleon_cms/CVE-2026-1776.yml
cvssv4 6.0 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/camaleon_cms/CVE-2026-1776.yml
generic_textual MODERATE https://github.com/rubysec/ruby-advisory-db/blob/master/gems/camaleon_cms/CVE-2026-1776.yml
cvssv3 6.5 https://nvd.nist.gov/vuln/detail/CVE-2026-1776
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2026-1776
cvssv4 6.0 https://nvd.nist.gov/vuln/detail/CVE-2026-1776
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2026-1776
cvssv3.1 6.5 https://www.vulncheck.com/advisories/camaleon-cms-aws-uploader-authenticated-path-traversal-arbitrary-file-read
cvssv4 6 https://www.vulncheck.com/advisories/camaleon-cms-aws-uploader-authenticated-path-traversal-arbitrary-file-read
cvssv4 6.0 https://www.vulncheck.com/advisories/camaleon-cms-aws-uploader-authenticated-path-traversal-arbitrary-file-read
generic_textual MODERATE https://www.vulncheck.com/advisories/camaleon-cms-aws-uploader-authenticated-path-traversal-arbitrary-file-read
ssvc Track https://www.vulncheck.com/advisories/camaleon-cms-aws-uploader-authenticated-path-traversal-arbitrary-file-read
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-1776
https://camaleon.website
1127 https://github.com/owen2345/camaleon-cms/pull/1127
camaleon-cms-aws-uploader-authenticated-path-traversal-arbitrary-file-read https://www.vulncheck.com/advisories/camaleon-cms-aws-uploader-authenticated-path-traversal-arbitrary-file-read
camaleon.website https://camaleon.website/
CVE-2026-1776 https://nvd.nist.gov/vuln/detail/CVE-2026-1776
CVE-2026-1776.YML https://github.com/rubysec/ruby-advisory-db/blob/master/gems/camaleon_cms/CVE-2026-1776.yml
f54a77e2a7be601215ea1b396038c589a0cab9af https://github.com/owen2345/camaleon-cms/commit/f54a77e2a7be601215ea1b396038c589a0cab9af
GHSA-jw5g-f64p-6x78 https://github.com/advisories/GHSA-jw5g-f64p-6x78
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Found at https://camaleon.website
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: 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 Found at https://camaleon.website
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: 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 Found at https://camaleon.website/
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-10T14:57:09Z/ Found at https://camaleon.website/
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/owen2345/camaleon-cms
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: 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 Found at https://github.com/owen2345/camaleon-cms
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/owen2345/camaleon-cms/commit/f54a77e2a7be601215ea1b396038c589a0cab9af
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

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Vector: 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 Found at https://github.com/owen2345/camaleon-cms/commit/f54a77e2a7be601215ea1b396038c589a0cab9af
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: 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 Found at https://github.com/owen2345/camaleon-cms/commit/f54a77e2a7be601215ea1b396038c589a0cab9af
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-10T14:57:09Z/ Found at https://github.com/owen2345/camaleon-cms/commit/f54a77e2a7be601215ea1b396038c589a0cab9af
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/owen2345/camaleon-cms/pull/1127
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: 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 Found at https://github.com/owen2345/camaleon-cms/pull/1127
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: 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 Found at https://github.com/owen2345/camaleon-cms/pull/1127
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-10T14:57:09Z/ Found at https://github.com/owen2345/camaleon-cms/pull/1127
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/rubysec/ruby-advisory-db/blob/master/gems/camaleon_cms/CVE-2026-1776.yml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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physical

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Vector: 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 Found at https://github.com/rubysec/ruby-advisory-db/blob/master/gems/camaleon_cms/CVE-2026-1776.yml
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2026-1776
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

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Vector: 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 Found at https://nvd.nist.gov/vuln/detail/CVE-2026-1776
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

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Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Found at https://www.vulncheck.com/advisories/camaleon-cms-aws-uploader-authenticated-path-traversal-arbitrary-file-read
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

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low

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Vector: 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 Found at https://www.vulncheck.com/advisories/camaleon-cms-aws-uploader-authenticated-path-traversal-arbitrary-file-read
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: 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 Found at https://www.vulncheck.com/advisories/camaleon-cms-aws-uploader-authenticated-path-traversal-arbitrary-file-read
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-10T14:57:09Z/ Found at https://www.vulncheck.com/advisories/camaleon-cms-aws-uploader-authenticated-path-traversal-arbitrary-file-read
Exploit Prediction Scoring System (EPSS)
Percentile 0.22876
EPSS Score 0.00076
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T16:50:02.269413+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2026/1xxx/CVE-2026-1776.json 38.6.0