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CVE-2026-45830

ChromaDB allows any authenticated users to arbitrarily read, write, update, or delete data in any tenant's collection

8.8 High

A lack of authorization validation in version 0.4.17 or later of the ChromaDB Python project allows any authenticated users to arbitrarily read, write, update, or delete data in any tenant's collection regardless of which tenant they belong to.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
None

Exploit likelihood

0.34%Up 0.3 points since Jun 13, 2026
90%50%10%1%

What each source reports

CVE List Score used 8.8

A lack of authorization validation in version 0.4.17 or later of the ChromaDB Python project allows any authenticated users to arbitrarily read, write, update, or delete data in any tenant's collection regardless of which tenant they belong to.

Record
CVE-2026-45830
CVSS 4.0
8.8 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-639, CWE-266
Updated
2026-11-02
EUVDEUVD-2026-36461 8.8

A lack of authorization validation in version 0.4.17 or later of the ChromaDB Python project allows any authenticated users to arbitrarily read, write, update, or delete data in any tenant's collection regardless of which tenant they belong to.

Record
EUVD-2026-36461
CVSS 4.0
8.8 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-2wm9-hf6c-p5cr 8.8

ChromaDB allows any authenticated users to arbitrarily read, write, update, or delete data in any tenant's collection

A lack of authorization validation in version 0.4.17 or later of the ChromaDB Python project allows any authenticated users to arbitrarily read, write, update, or delete data in any tenant's collection regardless of which tenant they belong to.

Record
GHSA-2wm9-hf6c-p5cr
CVSS 4.0
8.8 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-266, CWE-639
Updated
2026-11-02
NVD 8.8

A lack of authorization validation in version 0.4.17 or later of the ChromaDB Python project allows any authenticated users to arbitrarily read, write, update, or delete data in any tenant's collection regardless of which tenant they belong to.

Record
CVE-2026-45830
CVSS 4.0
8.8 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/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 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-639, CWE-266
Updated
2026-11-02
OSV 8.8

A lack of authorization validation in version 0.4.17 or later of the ChromaDB Python project allows any authenticated users to arbitrarily read, write, update, or delete data in any tenant's collection regardless of which tenant they belong to.

Record
CVE-2026-45830
CVSS 4.0
8.8 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
Weakness
CWE-639
Updated
2026-11-02
OSVGHSA-2wm9-hf6c-p5cr 8.8

ChromaDB allows any authenticated users to arbitrarily read, write, update, or delete data in any tenant's collection

A lack of authorization validation in version 0.4.17 or later of the ChromaDB Python project allows any authenticated users to arbitrarily read, write, update, or delete data in any tenant's collection regardless of which tenant they belong to.

Record
GHSA-2wm9-hf6c-p5cr
CVSS 4.0
8.8 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-266, CWE-639
Updated
2026-11-02
OSVPYSEC-2026-3813 8.8

ChromaDB allows any authenticated users to arbitrarily read, write, update, or delete data in any tenant's collection

A lack of authorization validation in version 0.4.17 or later of the ChromaDB Python project allows any authenticated users to arbitrarily read, write, update, or delete data in any tenant's collection regardless of which tenant they belong to.

Record
PYSEC-2026-3813
CVSS 4.0
8.8 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
chromadb
PyPI
 0.4.17 to 1.5.9 None known
chromadb
PyPI
 0.4.17 to 1.5.9, plus listed versions
0.4.180.4.190.4.200.4.210.4.22
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0.4.230.4.240.5.00.5.10.5.100.5.110.5.120.5.130.5.150.5.160.5.170.5.180.5.20.5.200.5.210.5.230.5.30.5.40.5.50.5.70.5.90.6.00.6.10.6.20.6.31.0.01.0.0b01.0.101.0.111.0.121.0.131.0.151.0.161.0.171.0.181.0.191.0.21.0.201.0.211.0.31.0.41.0.51.0.61.0.71.0.8
 None known

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-2026-45830 is a high vulnerability (CVSS 8.8) in Chroma Chromadb, published June 12, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.34%, the 28th percentile. No source names a fixed version.

References

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Left out here: 24 versions. The JSON record has them.

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