CouchCMS 2.2.1 contains a server-side request forgery vulnerability that allows authenticated attackers to make arbitrary HTTP requests by uploading malicious SVG files. Attackers can upload SVG files containing external entity references through the browse.php endpoint to access internal services and resources.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact Low

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
CouchCMS CouchCMS affected
Version Status Constraints
2.2.1 affected —

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Project Subscriptions

Vendors Products
Couchcms Subscribe
Couchcms Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/CouchCMS/CouchCMS cve-icon cve-icon
https://www.exploit-db.com/exploits/49675 cve-icon cve-icon
https://www.vulncheck.com/advisories/couchcms-server-side-request-forgery-via-svg-upload cve-icon cve-icon
History

Fri, 15 May 2026 19:00:00 +0000

Type Values Removed Values Added
Description CouchCMS 2.2.1 contains a server-side request forgery vulnerability that allows authenticated attackers to make arbitrary HTTP requests by uploading malicious SVG files. Attackers can upload SVG files containing external entity references through the browse.php endpoint to access internal services and resources.
Title CouchCMS 2.2.1 Server-Side Request Forgery via SVG upload
First Time appeared Couchcms
Couchcms couchcms
Weaknesses CWE-918
CPEs cpe:2.3:a:couchcms:couchcms:1.3.5:*:*:*:*:*:*:*
cpe:2.3:a:couchcms:couchcms:1.4.5:*:*:*:*:*:*:*
cpe:2.3:a:couchcms:couchcms:1.4.7:*:*:*:*:*:*:*
cpe:2.3:a:couchcms:couchcms:1.4:*:*:*:*:*:*:*
cpe:2.3:a:couchcms:couchcms:2.0:*:*:*:*:*:*:*
cpe:2.3:a:couchcms:couchcms:2.1:*:*:*:*:*:*:*
cpe:2.3:a:couchcms:couchcms:2.2.1:*:*:*:*:*:*:*
cpe:2.3:a:couchcms:couchcms:2.2:*:*:*:*:*:*:*
cpe:2.3:a:couchcms:couchcms:2.3:*:*:*:*:*:*:*
Vendors & Products Couchcms
Couchcms couchcms
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-05-15T18:36:26.824Z

Reserved: 2026-02-01T11:24:18.720Z

Link: CVE-2021-47958

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-15T19:16:54.623

Modified: 2026-05-15T19:16:54.623

Link: CVE-2021-47958

cve-icon Redhat

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cve-icon OpenCVE Enrichment

No data.

Weaknesses