Pixelfed OAuth Scope ApiV1Controller.php instancePeers missing authentication

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-93960
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-20 04:17:55 UTC
Updated2026-09-20 04:17:55 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v4.0 2.1 LOW from [email protected]

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/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

Problem Types: CWE-287 | CWE-306 | CWE-306 Missing Authentication | CWE-287 Improper Authentication

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary2.1LOWCVSS: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/C...
4.0CNADECLARED5.3MEDIUMCVSS: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
3.1[email protected]Primary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C
3.0CNADECLARED4.3MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C
2.0[email protected]Secondary4AV:N/AC:L/Au:S/C:N/I:P/A:N
2.0CNADECLARED4AV:N/AC:L/Au:S/C:N/I:P/A:N/E:POC/RL:OF/RC:C

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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/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

CVSS v3.1 Breakdown

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

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS v3.0 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Pixelfed affected 0.12.0 Not specified
CNA Na Pixelfed affected 0.12.1 Not specified
CNA Na Pixelfed affected 0.12.2 Not specified
CNA Na Pixelfed affected 0.12.3 Not specified
CNA Na Pixelfed affected 0.12.4 Not specified
CNA Na Pixelfed affected 0.12.5 Not specified
CNA Na Pixelfed affected 0.12.6 Not specified
CNA Na Pixelfed affected 0.12.7 Not specified
CNA Na Pixelfed affected 0.12.8 Not specified
CNA Na Pixelfed affected 0.12.9 Not specified
CNA Na Pixelfed affected 0.12.10 Not specified
CNA Na Pixelfed affected 0.12.11 Not specified
CNA Na Pixelfed unaffected 0.12.10 Not specified

References

ReferenceSourceLinkTags
github.com/pixelfed/pixelfed [email protected] github.com
vuldb.com/submit/944207 [email protected] vuldb.com
vuldb.com/cve/CVE-2026-93960 [email protected] vuldb.com
vuldb.com/vuln/407919 [email protected] vuldb.com
github.com/pixelfed/pixelfed/pull/6774 [email protected] github.com
github.com/pixelfed/pixelfed/issues/6643 [email protected] github.com
github.com/pixelfed/pixelfed/commit/68dca5097305fa0065d029587b2233524636... [email protected] github.com
github.com/pixelfed/pixelfed/releases/tag/v0.12.10 [email protected] github.com
vuldb.com/vuln/407919/cti [email protected] vuldb.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: geochen (VulDB User) (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-09-19T00:00:00.000ZAdvisory disclosed
CNA2026-09-19T02:00:00.000ZVulDB entry created
CNA2026-09-19T11:22:00.000ZVulDB entry last update

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