CVE-2026-23892: OctoPrint provides a web interface for controlling consumer 3D printers

Q: How do I fix CVE-2026-23892?

octoprint: upgrade to 1.11.6. Exact commands for each OS are on this page.

Q: Is CVE-2026-23892 being exploited?

CVE-2026-23892 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-2026-23892 affect?

CVE-2026-23892 affects octoprint. Severity is medium (CVSS 5.9). OctoPrint provides a web interface for controlling consumer 3D printers. OctoPrint versions up to and including 1.11.5 are affected by a (theoretical) timing attack vulnerability that allows API key extraction over the network. Due to using

Q: How urgent is CVE-2026-23892?

Priority 35/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 5.9REMOTEUPGRADE

CVE-2026-23892 is a medium-severity flaw (CVSS 5.9) affecting octoprint. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OctoPrint provides a web interface for controlling consumer 3D printers. OctoPrint versions up to and including 1.11.5 are affected by a (theoretical) timing attack vulnerability that allows API key extraction over the network. Due to using character based comparison that short-circuits on the first mismatched character during API key validation, rather than a cryptographical method with static runtime regardless of the point of mismatch, an atta

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 62%)
CISA exploited list	No
Weakness	CWE-208
Published	2026-01-27
Last modified	2026-06-17

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

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-27 19:16 UTCPublished CVE record published
2026-06-17 10:22 UTCUpdated Record last modified

octoprint octoprint UPGRADE

Affected: < 1.11.6

Fixed in: 1.11.6

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.11.6 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade octoprint

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-2026-23892?

octoprint: upgrade to 1.11.6. Exact commands for each OS are on this page.

Is CVE-2026-23892 being exploited?

CVE-2026-23892 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-2026-23892 affect?

CVE-2026-23892 affects octoprint. Severity is medium (CVSS 5.9). OctoPrint provides a web interface for controlling consumer 3D printers. OctoPrint versions up to and including 1.11.5 are affected by a (theoretical) timing attack vulnerability that allows API key extraction over the network. Due to using

How urgent is CVE-2026-23892?

Priority 35/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-58180 HIGH 8.8 UPGRADE OctoPrint provides a web interface for controlling consumer 3D printers
CVE-2025-64187 MEDIUM 4.4 UPGRADE OctoPrint provides a web interface for controlling consumer 3D printers
CVE-2025-48879 MEDIUM 6.5 UPGRADE OctoPrint versions up until and including 1.11.1 contain a vulnerability that allows any unauthenticated attac
CVE-2025-48067 MEDIUM 5.4 UPGRADE OctoPrint provides a web interface for controlling consumer 3D printers
CVE-2025-32788 MEDIUM 4.3 UPGRADE OctoPrint provides a web interface for controlling consumer 3D printers

References

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