CVE-2026-45829: A pre-authentication, code injection vulnerability in version 1.0.0 or later of the ChromaDB Python project al

Q: How do I fix CVE-2026-45829?

No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.

Q: Is CVE-2026-45829 being exploited?

CVE-2026-45829 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-45829 affect?

CVE-2026-45829 affects affected software. Severity is critical (CVSS 10.0). A pre-authentication, code injection vulnerability in version 1.0.0 or later of the ChromaDB Python project allows an unauthenticated attacker to run arbitrary code on the server by sending a malicious model repository and trust_remote_code

Q: How urgent is CVE-2026-45829?

Priority 70/100. Critical severity; EPSS top 3%: very likely to be exploited; CISA SSVC: public proof of concept; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

This week

CRITICAL 10.0REMOTE

CVE-2026-45829 is a critical-severity flaw (CVSS 10.0) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A pre-authentication, code injection vulnerability in version 1.0.0 or later of the ChromaDB Python project allows an unauthenticated attacker to run arbitrary code on the server by sending a malicious model repository and trust_remote_code set to true in the /api/v2/tenants/{tenant}/databases/{db}/collections endpoint.

Why this priority

Critical severity
EPSS top 3%: very likely to be exploited
CISA SSVC: public proof of concept
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	10.0 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	15.1% (top 3%)
CISA exploited list	No
Weakness	CWE-94, CWE-502
Published	2026-05-18
Last modified	2026-10-26

Publisher (CNA): HiddenLayer

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Timeline

2026-05-18 17:16 UTCPublished CVE record published
2026-10-26 13:10 UTCUpdated Record last modified

Exact fixes by distribution

Python (pip) · chromadb · NO FIX YET · vulnerable: >= 1.0.0, <= 1.5.9 · source

Fedora 46 · flare-im · FIXED · 0.22.7-1.fc46 · FEDORA-2026-cd5e8062a1 · source

sudo dnf upgrade --advisory=FEDORA-2026-cd5e8062a1

Fedora ELN · libdnf · FIXED · 0.76.0-2.eln159 · FEDORA-2026-dbd263e9d4 · source

sudo dnf upgrade --advisory=FEDORA-2026-dbd263e9d4

RHEL AI (RHEL AI) 3 · rhelai3/bootc-cuda-rhel9 · NOT AFFECTED

RHEL AI (RHEL AI) 3 · rhelai3/bootc-gaudi-rhel9 · NOT AFFECTED

RHEL AI (RHEL AI) 3 · rhelai3/bootc-rocm-rhel9 · NOT AFFECTED

RHEL AI (RHEL AI) 3 · rhelai3/disk-image-cuda-rhel9 · NOT AFFECTED

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: fevar54/FULL-ANALYSIS---CVE-2026-45829-ChromaDB- (0 stars)
GitHub PoC: 0xBlackash/CVE-2026-45829 (0 stars)

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-45829?

No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.

Is CVE-2026-45829 being exploited?

CVE-2026-45829 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-45829 affect?

CVE-2026-45829 affects affected software. Severity is critical (CVSS 10.0). A pre-authentication, code injection vulnerability in version 1.0.0 or later of the ChromaDB Python project allows an unauthenticated attacker to run arbitrary code on the server by sending a malicious model repository and trust_remote_code

How urgent is CVE-2026-45829?

Priority 70/100. Critical severity; EPSS top 3%: very likely to be exploited; CISA SSVC: public proof of concept; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Software pages

Python vulnerabilities

References

← Back to latest CVEs