CVE-2026-85453: MOOS core-moos through 10.4.0 fails to escape database contents when rendering MOOSDB HTTP pages, allowing att

Q: How do I fix CVE-2026-85453?

core-moos: upgrade to 10.4.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-85453 being exploited?

CVE-2026-85453 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-2026-85453 affect?

CVE-2026-85453 affects core-moos. Severity is medium (CVSS 6.1). MOOS core-moos through 10.4.0 fails to escape database contents when rendering MOOSDB HTTP pages, allowing attackers to inject malicious scripts. Any MOOS publisher can set variable values containing script payloads that execute in the brow

Q: How urgent is CVE-2026-85453?

Priority 28/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2026-85453 is a medium-severity flaw (CVSS 6.1) affecting core-moos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

MOOS core-moos through 10.4.0 fails to escape database contents when rendering MOOSDB HTTP pages, allowing attackers to inject malicious scripts. Any MOOS publisher can set variable values containing script payloads that execute in the browser of operators viewing the web interface.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 73%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-09-03
Last modified	2026-10-14

Publisher (CNA): VulnCheck · Vendor: themoos

Last updated 2026-10-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-03 23:17 UTCPublished CVE record published
2026-10-14 23:33 UTCUpdated Record last modified

themoos core-moos UPGRADE

Affected: < 10.4.0

Fixed in: 10.4.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy core-moos || rpm -q core-moos || core-moos --version

2. UPGRADE to 10.4.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade core-moos

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade core-moos

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-2026-85453?

core-moos: upgrade to 10.4.0. Exact commands for each OS are on this page.

Is CVE-2026-85453 being exploited?

CVE-2026-85453 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-2026-85453 affect?

CVE-2026-85453 affects core-moos. Severity is medium (CVSS 6.1). MOOS core-moos through 10.4.0 fails to escape database contents when rendering MOOSDB HTTP pages, allowing attackers to inject malicious scripts. Any MOOS publisher can set variable values containing script payloads that execute in the brow

How urgent is CVE-2026-85453?

Priority 28/100. No elevated risk signals yet.

Related CVEs

CVE-2026-85455 HIGH 8.2 UPGRADE MOOS core-moos through 10.4.0 contains a buffer over-read vulnerability in CMOOSCommPkt where a four-byte pack
CVE-2026-85454 MEDIUM 6.1 UPGRADE MOOS core-moos through 10.4.0 contains a buffer overflow vulnerability in CMOOSSerialPort::GetTelegram() that
CVE-2026-85451 HIGH 7.1 UPGRADE MOOS core-moos through 10.4.0 contains a remote process termination vulnerability in the SuicidalSleeper compo
CVE-2026-85450 HIGH 7.5 UPGRADE MOOS core-moos through 10.4.0 contains a denial of service vulnerability in the MOOSDB HTTP server that create
CVE-2026-85443 HIGH 7.5 UPGRADE MOOS core-moos through 10.4.0 contains a denial of service vulnerability in MOOSCommServer::ListenLoop() where

References

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