CVE-2023-48314: Collabora Online is a collaborative online office suite based on LibreOffice technology

Q: How do I fix CVE-2023-48314?

collabora online: upgrade to 23.5.403. Exact commands for each OS are on this page.

Q: Is CVE-2023-48314 being exploited?

CVE-2023-48314 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-2023-48314 affect?

CVE-2023-48314 affects collabora online. Severity is high (CVSS 7.1). Collabora Online is a collaborative online office suite based on LibreOffice technology. Users of Nextcloud with Collabora Online Built-in CODE Server app can be vulnerable to attack via proxy.php. This vulnerability has been fixed in Colla

Routine

HIGH 7.1UPGRADE

CVE-2023-48314 is a high-severity flaw (CVSS 7.1) affecting collabora online. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Collabora Online is a collaborative online office suite based on LibreOffice technology. Users of Nextcloud with Collabora Online Built-in CODE Server app can be vulnerable to attack via proxy.php. This vulnerability has been fixed in Collabora Online - Built-in CODE Server (richdocumentscode) release 23.5.403. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-12-01
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2023-12-01 22:15 UTCPublished CVE record published
2026-06-17 06:33 UTCUpdated Record last modified

collaboraoffice collabora online UPGRADE

Affected: < 23.5.403

Fixed in: 23.5.403

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy collabora-online || rpm -q collabora-online || collabora-online --version

2. UPGRADE to 23.5.403 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade collabora-online

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade collabora-online

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-2023-48314?

collabora online: upgrade to 23.5.403. Exact commands for each OS are on this page.

Is CVE-2023-48314 being exploited?

CVE-2023-48314 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-2023-48314 affect?

CVE-2023-48314 affects collabora online. Severity is high (CVSS 7.1). Collabora Online is a collaborative online office suite based on LibreOffice technology. Users of Nextcloud with Collabora Online Built-in CODE Server app can be vulnerable to attack via proxy.php. This vulnerability has been fixed in Colla

How urgent is CVE-2023-48314?

Priority 34/100. High severity

Software pages

PHP vulnerabilities · Nextcloud vulnerabilities · LibreOffice vulnerabilities

Related CVEs

CVE-2024-29182 MEDIUM 6.1 UPGRADE Collabora Online is a collaborative online office suite based on LibreOffice

References

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