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Fencer Intel
medium —

GHSA-q37h-jhf3-85cj json

Bypass of CMS Safe Mode Security Feature

published 4y ago modified last yr.

cvss
—
not scored
cisa kev
Not listed
not in CISA's catalog
epss
—
no score, EPSS covers CVEs only
public exploits
0
none known

Summary

### Impact

Authenticated users with permissions to create or modify theme template objects through the backend "CMS" editor can exploit this vulnerability to bypass the `cms.enableSafeMode` security feature if enabled (disables modification of PHP code through the web interface when enabled).

This is only an issue for Winter CMS instances that rely on the Safe Mode security feature to prevent privileged users from modifying the PHP code of CMS theme template objects through the web interface.

CVSS v3.1 Vector: [AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C](https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C&version=3.1)

### Patches

Issue has been fixed in v1.0.475, v1.1.9, & v1.2.

### Workarounds

Apply https://github.com/wintercms/storm/commit/03eb5ce3f2a271670574802b914f7bcaf07663c1 manually if unable to upgrade to v1.0.475, v1.1.9, or v1.2.0.

### References

See https://github.com/octobercms/october/security/advisories/GHSA-79jw-2f46-wv22/.

Credit to [David Miller](https://github.com/cydave) for reporting the issue.

### For more information If you have any questions or comments about this advisory: * Email us at [hello@wintercms.com](mailto:hello@wintercms.com)

Patch / fix

  • packagist wintercms/winter 1.0.475, 1.1.9

Is GHSA-q37h-jhf3-85cj in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Affected packages

ecosystem package affected fixed in
packagist wintercms/winter
<1.0.475
>=1.1.0, <1.1.9
1.0.475
1.1.9

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.