CVE-2026-22254: Winter is a free, open-source content management system (CMS) based on the Laravel PHP framework

Q: How do I fix CVE-2026-22254?

winter: upgrade to 1.2.10. Exact commands for each OS are on this page.

Q: Is CVE-2026-22254 being exploited?

CVE-2026-22254 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-2026-22254 affect?

CVE-2026-22254 affects winter. Severity is none (CVSS 0.0). Winter is a free, open-source content management system (CMS) based on the Laravel PHP framework. Versions of Winter CMS before 1.2.10 allow users with access to the CMS Asset Manager were able to upload SVGs without automatic sanitization.

Q: How urgent is CVE-2026-22254?

Priority 5/100. No elevated risk signals yet.

Routine

NONE 0.0UPGRADE

CVE-2026-22254 is a none-severity flaw (CVSS 0.0) affecting winter. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Winter is a free, open-source content management system (CMS) based on the Laravel PHP framework. Versions of Winter CMS before 1.2.10 allow users with access to the CMS Asset Manager were able to upload SVGs without automatic sanitization. To actively exploit this security issue, an attacker would need access to the Backend with a user account with the following permission: cms.manage_assets. The Winter CMS maintainers strongly recommend that th

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	0.0 (None)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-79, CWE-80
Published	2026-02-06
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2026-02-06 20:16 UTCPublished CVE record published
2026-06-17 10:19 UTCUpdated Record last modified

wintercms winter UPGRADE

Affected: < 1.2.10

Fixed in: 1.2.10

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.2.10 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade winter

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-2026-22254?

winter: upgrade to 1.2.10. Exact commands for each OS are on this page.

Is CVE-2026-22254 being exploited?

CVE-2026-22254 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-2026-22254 affect?

CVE-2026-22254 affects winter. Severity is none (CVSS 0.0). Winter is a free, open-source content management system (CMS) based on the Laravel PHP framework. Versions of Winter CMS before 1.2.10 allow users with access to the CMS Asset Manager were able to upload SVGs without automatic sanitization.

How urgent is CVE-2026-22254?

Priority 5/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities · Laravel vulnerabilities

Related CVEs

CVE-2024-54149 HIGH 8.4 UPGRADE Winter is a free, open-source content management system (CMS) based on the Laravel PHP framework

References

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