CVE-2026-33193: Docmost is open-source collaborative wiki and documentation software

Q: How do I fix CVE-2026-33193?

docmost: upgrade to 0.70.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-33193 being exploited?

CVE-2026-33193 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-2026-33193 affect?

CVE-2026-33193 affects docmost. Severity is medium (CVSS 4.6). Docmost is open-source collaborative wiki and documentation software. Versions prior to 0.70.0 are vulnerable to a stored cross-site scripting (XSS) attack due to improper handling of MIME type spoofing (GHSL-2026-052). An attacker could ex

Q: How urgent is CVE-2026-33193?

Priority 18/100. No elevated risk signals yet.

Routine

MEDIUM 4.6UPGRADE

CVE-2026-33193 is a medium-severity flaw (CVSS 4.6) affecting docmost. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Docmost is open-source collaborative wiki and documentation software. Versions prior to 0.70.0 are vulnerable to a stored cross-site scripting (XSS) attack due to improper handling of MIME type spoofing (GHSL-2026-052). An attacker could exploit this flaw to inject malicious scripts, potentially compromising the security of users and data. Version 0.70.0 contains a patch.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.6 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 92%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-04-14
Last modified	2026-07-24

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

Last updated 2026-07-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-14 22:16 UTCPublished CVE record published
2026-07-24 23:10 UTCUpdated Record last modified

docmost docmost UPGRADE

Affected: < 0.70.0

Fixed in: 0.70.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 0.70.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade docmost

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-2026-33193?

docmost: upgrade to 0.70.0. Exact commands for each OS are on this page.

Is CVE-2026-33193 being exploited?

CVE-2026-33193 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-2026-33193 affect?

CVE-2026-33193 affects docmost. Severity is medium (CVSS 4.6). Docmost is open-source collaborative wiki and documentation software. Versions prior to 0.70.0 are vulnerable to a stored cross-site scripting (XSS) attack due to improper handling of MIME type spoofing (GHSL-2026-052). An attacker could ex

How urgent is CVE-2026-33193?

Priority 18/100. No elevated risk signals yet.

Related CVEs

CVE-2026-33146 MEDIUM 4.3 UPGRADE Docmost is open-source collaborative wiki and documentation software
CVE-2026-34212 MEDIUM 5.4 UPGRADE Docmost is open-source collaborative wiki and documentation software
CVE-2026-34213 MEDIUM 5.4 UPGRADE Docmost is open-source collaborative wiki and documentation software
CVE-2026-40927 MEDIUM 5.4 UPGRADE Docmost is open-source collaborative wiki and documentation software

References

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