CVE-2025-61656: Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in W

Routine

MEDIUM 6.1UPGRADE

CVE-2025-61656 is a medium-severity flaw (CVSS 6.1) affecting visual editor. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation VisualEditor. This vulnerability is associated with program files src/ce/ve.Ce.ClipboardHandler.Js. This issue affects VisualEditor: from * before 1.39.14, 1.43.4, 1.44.1.

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	0.2% (top 93%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-02-03
Last modified	2026-06-17

Publisher (CNA): wikimedia-foundation · Vendor: mediawiki

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

Am I affected?

Timeline

2026-02-03 02:16 UTCPublished CVE record published
2026-06-17 09:50 UTCUpdated Record last modified

mediawiki visual editor UPGRADE

Affected: >= 1.39.0 and < 1.39.14 · >= 1.43.0 and < 1.43.4 · 1.44.0

Fixed in: 1.39.14, 1.43.4

Safe to downgrade to: a release before 1.39.0

1. Check installed version

apt-cache policy visual-editor || rpm -q visual-editor || visual-editor --version

2. UPGRADE to 1.39.14 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade visual-editor

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade visual-editor

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.39.0 (Debian / Ubuntu)

apt-cache madison visual-editor sudo apt install visual-editor=<VERSION_BEFORE_1.39.0> sudo apt-mark hold visual-editor

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list visual-editor sudo dnf downgrade visual-editor-<VERSION_BEFORE_1.39.0> sudo dnf versionlock add visual-editor

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2025-61656?

visual editor: upgrade to 1.39.14, 1.43.4. Exact commands for each OS are on this page.

Is CVE-2025-61656 being exploited?

CVE-2025-61656 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-2025-61656 affect?

CVE-2025-61656 affects visual editor. Severity is medium (CVSS 6.1). Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation VisualEditor. This vulnerability is associated with program files src/ce/ve.Ce.ClipboardHandler.Js. This issu

How urgent is CVE-2025-61656?

Priority 23/100. No elevated risk signals yet.

Related CVEs

CVE-2025-61655 MEDIUM 6.1 UPGRADE Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in W

References

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