CVE-2023-2848: Movim prior to version 0.22 is affected by a Cross-Site WebSocket Hijacking vulnerability

Q: How do I fix CVE-2023-2848?

movim: upgrade to 0.22. Exact commands for each OS are on this page.

Q: Is CVE-2023-2848 being exploited?

CVE-2023-2848 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-2023-2848 affect?

CVE-2023-2848 affects movim. Severity is high (CVSS 8.0). Movim prior to version 0.22 is affected by a Cross-Site WebSocket Hijacking vulnerability. This was the result of a missing header validation.

Routine

HIGH 8.0UPGRADE

CVE-2023-2848 is a high-severity flaw (CVSS 8.0) affecting movim. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Movim prior to version 0.22 is affected by a Cross-Site WebSocket Hijacking vulnerability. This was the result of a missing header validation.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.0 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 69%)
CISA exploited list	No
Weakness	CWE-1385, CWE-346
Published	2023-09-14
Last modified	2026-06-17

Publisher (CNA): Snyk · Vendor: movim

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

Am I affected?

Timeline

2023-09-14 12:15 UTCPublished CVE record published
2026-06-17 05:53 UTCUpdated Record last modified

movim movim UPGRADE

Affected: < 0.22

Fixed in: 0.22

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 0.22 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade movim

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-2023-2848?

movim: upgrade to 0.22. Exact commands for each OS are on this page.

Is CVE-2023-2848 being exploited?

CVE-2023-2848 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-2023-2848 affect?

CVE-2023-2848 affects movim. Severity is high (CVSS 8.0). Movim prior to version 0.22 is affected by a Cross-Site WebSocket Hijacking vulnerability. This was the result of a missing header validation.

How urgent is CVE-2023-2848?

Priority 36/100. High severity

References

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