CVE-2026-39424: MaxKB is an open-source AI assistant for enterprise

Q: How do I fix CVE-2026-39424?

maxkb: upgrade to 2.8.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-39424 being exploited?

CVE-2026-39424 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-2026-39424 affect?

CVE-2026-39424 affects maxkb. Severity is medium (CVSS 4.7). MaxKB is an open-source AI assistant for enterprise. In versions 2.7.1 and below, the chat export feature is vulnerable to Improper Neutralization of Formula Elements in a CSV File. When an administrator exports the application chat history

Q: How urgent is CVE-2026-39424?

Priority 24/100. No elevated risk signals yet.

Routine

MEDIUM 4.7UPGRADE

CVE-2026-39424 is a medium-severity flaw (CVSS 4.7) affecting maxkb. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

MaxKB is an open-source AI assistant for enterprise. In versions 2.7.1 and below, the chat export feature is vulnerable to Improper Neutralization of Formula Elements in a CSV File. When an administrator exports the application chat history to an Excel file (.xlsx) via the /admin/api/workspace/{workspace_id}/application/{application_id}/chat/export endpoint, strings starting with formula characters are written directly without proper sanitization

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.7 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-1236
Published	2026-04-14
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: maxkb

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

Am I affected?

Timeline

2026-04-14 01:16 UTCPublished CVE record published
2026-10-26 22:10 UTCUpdated Record last modified

maxkb maxkb UPGRADE

Affected: < 2.8.0

Fixed in: 2.8.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy maxkb || rpm -q maxkb || maxkb --version

2. UPGRADE to 2.8.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade maxkb

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade maxkb

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2026-39424?

maxkb: upgrade to 2.8.0. Exact commands for each OS are on this page.

Is CVE-2026-39424 being exploited?

CVE-2026-39424 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-2026-39424 affect?

CVE-2026-39424 affects maxkb. Severity is medium (CVSS 4.7). MaxKB is an open-source AI assistant for enterprise. In versions 2.7.1 and below, the chat export feature is vulnerable to Improper Neutralization of Formula Elements in a CSV File. When an administrator exports the application chat history

How urgent is CVE-2026-39424?

Priority 24/100. No elevated risk signals yet.

Related CVEs

CVE-2026-39421 MEDIUM 6.3 UPGRADE MaxKB is an open-source AI assistant for enterprise
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CVE-2026-39417 MEDIUM 4.6 UPGRADE MaxKB is an open-source AI assistant for enterprise
CVE-2026-39419 LOW 3.1 UPGRADE MaxKB is an open-source AI assistant for enterprise
CVE-2026-39420 MEDIUM 6.3 UPGRADE MaxKB is an open-source AI assistant for enterprise

References

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