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CVE-2026-41129

Craft CMS has Server-Side Request Forgery (SSRF) with Asset Uploads Mutations

5.5 MediumFix available

Craft CMS is a content management system (CMS). Versions on the 4.x branch through 4.17.8 and the 5.x branch through 5.9.14 are vulnerable to Server-Side Request Forgery. The exploitation requires a few permissions to be enabled in the used GraphQL schema: "Edit assets in the <VolumeName> volume" and "Create assets in the <VolumeName> volume." Versions 4.17.9 and 5.9.15 patch the issue.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
High
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
Low
Availability
None

Exploit likelihood

0.27%Up 0.2 points since Apr 22, 2026
90%50%10%1%

What each source reports

CVE List Score used 5.5

Craft CMS has Server-Side Request Forgery (SSRF) with Asset Uploads Mutations

Craft CMS is a content management system (CMS). Versions on the 4.x branch through 4.17.8 and the 5.x branch through 5.9.14 are vulnerable to Server-Side Request Forgery. The exploitation requires a few permissions to be enabled in the used GraphQL schema: "Edit assets in the <VolumeName> volume" and "Create assets in the <VolumeName> volume." Versions 4.17.9 and 5.9.15 patch the issue.

Record
CVE-2026-41129
CVSS 4.0
5.5 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
Weakness
CWE-918
Updated
2026-11-02
EUVDEUVD-2026-24569 5.5

Craft CMS is a content management system (CMS). Versions on the 4.x branch through 4.17.8 and the 5.x branch through 5.9.14 are vulnerable to Server-Side Request Forgery. The exploitation requires a few permissions to be enabled in the used GraphQL schema: "Edit assets in the <VolumeName> volume" and "Create assets in the <VolumeName> volume." Versions 4.17.9 and 5.9.15 patch the issue.

Record
EUVD-2026-24569
CVSS 4.0
5.5 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
Updated
2026-11-02
GitHub AdvisoriesGHSA-3m9m-24vh-39wx 5.5

Server-Side Request Forgery (SSRF) in Craft CMS with Asset Uploads Mutations

Required Permissions

The exploitation requires a few permissions to be enabled in the used GraphQL schema:

  • "Edit assets in the <VolumeName> volume"
  • "Create assets in the <VolumeName> volume"

Details

The implementation fails to restrict the URL Scheme. While the application is intended to "upload assets", there is no whitelist forcing http or https. This allows attackers to use the Gopher protocol to wrap raw TCP commands.

Impact: Combined with the DWORD bypass, an attacker can hit internal services without triggering any "127.0.0.1" string-matching filters.

Example Payload: gopher://2130706433:6379/_FLUSHALL (Targets local Redis via DWORD).

Remediation Strategy

To prevent mathematical IP obfuscation, the application must normalize the hostname before validation.

Record
GHSA-3m9m-24vh-39wx
CVSS 4.0
5.5 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
Weakness
CWE-918
Updated
2026-11-02
NVD 5.5

Craft CMS is a content management system (CMS). Versions on the 4.x branch through 4.17.8 and the 5.x branch through 5.9.14 are vulnerable to Server-Side Request Forgery. The exploitation requires a few permissions to be enabled in the used GraphQL schema: "Edit assets in the <VolumeName> volume" and "Create assets in the <VolumeName> volume." Versions 4.17.9 and 5.9.15 patch the issue.

Record
CVE-2026-41129
CVSS 4.0
5.5 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/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
Weakness
CWE-918
Updated
2026-11-02
OSV 5.5

Craft CMS has Server-Side Request Forgery (SSRF) with Asset Uploads Mutations

Craft CMS is a content management system (CMS). Versions on the 4.x branch through 4.17.8 and the 5.x branch through 5.9.14 are vulnerable to Server-Side Request Forgery. The exploitation requires a few permissions to be enabled in the used GraphQL schema: "Edit assets in the <VolumeName> volume" and "Create assets in the <VolumeName> volume." Versions 4.17.9 and 5.9.15 patch the issue.

Record
CVE-2026-41129
CVSS 4.0
5.5 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
Weakness
CWE-918
Updated
2026-11-02
OSVGHSA-3m9m-24vh-39wx 5.5

Server-Side Request Forgery (SSRF) in Craft CMS with Asset Uploads Mutations

Required Permissions

The exploitation requires a few permissions to be enabled in the used GraphQL schema:

  • "Edit assets in the <VolumeName> volume"
  • "Create assets in the <VolumeName> volume"

Details

The implementation fails to restrict the URL Scheme. While the application is intended to "upload assets", there is no whitelist forcing http or https. This allows attackers to use the Gopher protocol to wrap raw TCP commands.

Impact: Combined with the DWORD bypass, an attacker can hit internal services without triggering any "127.0.0.1" string-matching filters.

Example Payload: gopher://2130706433:6379/_FLUSHALL (Targets local Redis via DWORD).

Remediation Strategy

To prevent mathematical IP obfuscation, the application must normalize the hostname before validation.

Record
GHSA-3m9m-24vh-39wx
CVSS 4.0
5.5 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
Weakness
CWE-918
Updated
2026-11-02
OSVCLSA-2026-1783386121 No score

TuxCare security update for craftcms/cms (1 CVE)

TuxCare rebuilt craftcms/cms to address 1 CVE. Fixed in 3.9.15-p4+tuxcare.

Record
CLSA-2026-1783386121
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
craftcms/cms
Packagist
 5.0.0-RC1 to 5.9.14
5.9.15
craftcms/cms
Packagist
 4.0.0-RC1 to 4.17.8
4.17.9
craftcms/cms
TuxCare:Packagist
 3.9.15 up to 3.9.15-p4+tuxcare, plus listed versions
3.9.15-p1+tuxcare3.9.15-p2+tuxcare3.9.15-p3+tuxcare
3.9.15-p4+tuxcare
craftcms/cms
Packagist
 5.0.0-RC1 up to 5.9.15, plus listed versions
5.0.05.0.15.0.25.0.35.0.4
Show 45 moreShow less
5.0.55.0.65.1.05.1.15.1.105.1.25.1.35.1.45.1.55.1.65.1.75.1.85.1.95.2.05.2.0-beta.15.2.0-beta.25.2.0-beta.35.2.0-beta.45.2.0-beta.55.2.0-beta.65.2.15.2.105.2.25.2.35.2.45.2.4.15.2.55.2.65.2.75.2.85.2.95.3.05.3.0-beta.15.3.0-beta.25.3.0.15.3.0.25.3.0.35.3.15.3.25.3.35.3.45.3.55.3.65.4.05.4.0.1
5.9.15
craftcms/cms
Packagist
 4.0.0-RC1 up to 4.17.9, plus listed versions
4.0.04.0.0-RC24.0.0-RC34.0.0.14.0.1
Show 45 moreShow less
4.0.24.0.34.0.44.0.54.0.5.14.0.5.24.0.64.1.04.1.0.14.1.0.24.1.14.1.24.1.34.1.44.1.4.14.10.04.10.0-beta.14.10.0-beta.24.10.14.10.24.10.34.10.44.10.54.10.64.10.74.10.84.11.04.11.0.14.11.0.24.11.14.11.24.11.34.11.44.11.54.12.04.12.14.12.24.12.34.12.44.12.4.14.12.54.12.64.12.6.14.12.74.12.8
4.17.9

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-41129 is a medium vulnerability (CVSS 5.5) in Craftcms Cms, published April 14, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 20th percentile. Fixed in craftcms/cms 5.9.15.

References

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Left out here: 300 versions. The JSON record has them.

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