Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-52cw-pvq9-9m5v
Advisory ID github_osv/GHSA-52cw-pvq9-9m5v
Aliases
Summary Silverstripe uses TinyMCE which allows svg files linked in object tags ### Impact TinyMCE v6 has a configuration value `convert_unsafe_embeds` set to `false` which allows svg files containing javascript to be used in `<object>` or `<embed>` tags, which can be used as a vector for XSS attacks. Note that `<embed>` tags are not allowed by default. After patching the default value of `convert_unsafe_embeds` will be set to `true`. This means that `<object>` tags will be converted to iframes instead the next time the page is saved, which may break any pages that rely upon previously saved `<object>` tags. Developers can override this configuration if desired to revert to the original behaviour. We reviewed the potential impact of this vulnerability within the context of Silverstripe CMS. We concluded this is a medium impact vulnerability given how TinyMCE is used by Silverstripe CMS. ### References: - https://www.silverstripe.org/download/security-releases/ss-2024-001 - https://github.com/advisories/GHSA-5359-pvf2-pw78
Status Published
Exploitability 0.5
Weighted Severity 4.9
Risk 2.5
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (2)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-1395 Dependency on Vulnerable Third-Party Component
System Score Found at
cvssv3.1 5.4 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/07/GHSA-52cw-pvq9-9m5v/GHSA-52cw-pvq9-9m5v.json
cvssv4 5.3 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/07/GHSA-52cw-pvq9-9m5v/GHSA-52cw-pvq9-9m5v.json
generic_textual MODERATE
Reference id Reference type URL
https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/framework/SS-2024-001.yaml
https://github.com/silverstripe/silverstripe-framework
https://www.silverstripe.org/download/security-releases/ss-2024-001
GHSA-52cw-pvq9-9m5v https://github.com/silverstripe/silverstripe-framework/security/advisories/GHSA-52cw-pvq9-9m5v
GHSA-5359-pvf2-pw78 https://github.com/advisories/GHSA-5359-pvf2-pw78
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/07/GHSA-52cw-pvq9-9m5v/GHSA-52cw-pvq9-9m5v.json
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

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/07/GHSA-52cw-pvq9-9m5v/GHSA-52cw-pvq9-9m5v.json
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

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

There are no SSVC decisions available.