CVE-2026-93960

Pixelfed OAuth Scope ApiV1Controller.php instancePeers missing authentication

Assigner: VulDB
Reserved: 19.09.2026 Published: 20.09.2026 Updated: 20.09.2026

A vulnerability was identified in Pixelfed up to 0.12.11. Impacted is the function instancePeers of the file app/Http/Controllers/Api/ApiV1Controller.php of the component OAuth Scope Handler. Such manipulation of the argument ID leads to missing authentication. The attack may be performed from remote. The exploit is publicly available and might be used. Upgrading to version 0.12.10 is recommended to address this issue. The name of the patch is 68dca5097305fa0065d029587b2233524636025a. Upgrading the affected component is advised.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
CVSS Score: 5.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	Low	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C
CVSS Score: 4.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	Low	Integrity Impact	Low
User Interaction	None	Availability Impact	None

CVSS 3.1

CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C
CVSS Score: 4.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	Low	Integrity Impact	Low
User Interaction	None	Availability Impact	None

CVSS 3.0

CVSS Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N/E:POC/RL:OF/RC:C
CVSS Score: 4

Access Vector	Network	Confidentiality Impact	None
Access Complexity	Low	Integrity Impact	Partial
Authentication	Single	Availability Impact	None

CVSS 2.0

Product Status

Vendor	n/a
Product	Pixelfed
Versions	Version 0.12.0 is affected Version 0.12.1 is affected Version 0.12.2 is affected Version 0.12.3 is affected Version 0.12.4 is affected Version 0.12.5 is affected Version 0.12.6 is affected Version 0.12.7 is affected Version 0.12.8 is affected Version 0.12.9 is affected Version 0.12.10 is affected Version 0.12.11 is affected Version 0.12.10 is unaffected

Vendor

n/a

Product

Pixelfed

Versions

Version 0.12.0 is affected
Version 0.12.1 is affected
Version 0.12.2 is affected
Version 0.12.3 is affected
Version 0.12.4 is affected
Version 0.12.5 is affected
Version 0.12.6 is affected
Version 0.12.7 is affected
Version 0.12.8 is affected
Version 0.12.9 is affected
Version 0.12.10 is affected
Version 0.12.11 is affected
Version 0.12.10 is unaffected

Credits

geochen (VulDB User) reporter

References

Problem Types