Baserow Inactive Non-Staff User serializers.py BaserowImpersonateAuthTokenSerializer improper authorization

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-18817
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-04 22:17:14 UTC
Updated2026-08-12 20:59:00 UTC
DescriptionA security flaw has been discovered in Baserow up to 2.3.2. Affected by this issue is the function BaserowImpersonateAuthTokenSerializer of the file backend/src/baserow/api/admin/users/serializers.py of the component Inactive Non-Staff User Handler. Performing a manipulation results in improper authorization. Remote exploitation of the attack is possible. The complexity of an attack is rather high. The exploitation is known to be difficult. The presence of this vulnerability remains uncertain at this time. Upgrading to version 2.3.3 can resolve this issue. The affected component should be upgraded. The project maintainer explains: "While the problem exists, I'm not really sure if it's a vulnerability. (....) Even though the back gives a token for a deactivate user, none of the endpoints actually work. That said, we will fix it, but so far it seems more like a bug instead of a vulnerability."

Risk And Classification

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

CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/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

EPSS: 0.002030000 probability, percentile 0.104630000 (date 2026-08-14)

Problem Types: CWE-266 | CWE-285 | CWE-285 Improper Authorization | CWE-266 Incorrect Privilege Assignment

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary2.1LOWCVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/C...
4.0CNADECLARED2.1LOWCVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X
3.1[email protected]Secondary2.2LOWCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED2.2LOWCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N/E:X/RL:O/RC:C
3.0CNADECLARED2.2LOWCVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N/E:X/RL:O/RC:C
2.0[email protected]Secondary1.7AV:N/AC:H/Au:M/C:N/I:P/A:N
2.0CNADECLARED1.7AV:N/AC:H/Au:M/C:N/I:P/A:N/E:ND/RL:OF/RC:C

CVSS v4.0 Breakdown

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

CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/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
High
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

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

CVSS v3.0 Breakdown

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

CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N/E:X/RL:O/RC:C

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Baserow affected 2.3.0 Not specified
CNA Na Baserow affected 2.3.1 Not specified
CNA Na Baserow affected 2.3.2 Not specified
CNA Na Baserow unaffected 2.3.3 Not specified

References

ReferenceSourceLinkTags
github.com/baserow/baserow/releases/tag/2.3.3 [email protected] github.com
vuldb.com/vuln/385816 [email protected] vuldb.com
vuldb.com/submit/857942 [email protected] vuldb.com
vuldb.com/cve/CVE-2026-18817 [email protected] vuldb.com
vuldb.com/vuln/385816/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: GalaxynX (VulDB User) (en)

CNA: VulDB CNA Team (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-08-04T00:00:00.000ZAdvisory disclosed
CNA2026-08-04T02:00:00.000ZVulDB entry created
CNA2026-08-04T14:59:21.000ZVulDB entry last update

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