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Fencer Intel
high 7.5

GHSA-m5q3-mvcr-gc5m json

silverstripe/framework BackURL validation bypass with malformed URLs

published 2y ago modified last yr.

cvss
7.5
version 3.1, GitHub
cisa kev
Not listed
not in CISA's catalog
epss
—
no score, EPSS covers CVEs only
public exploits
0
none known

Summary

A carefully constructed malformed URL can be used to circumvent the offsite redirection protection used on `BackURL` parameters. This could lead to users entering sensitive data in malicious websites instead of the intended one.

Patch / fix

  • packagist silverstripe/framework 4.0.4, 4.1.1

Is GHSA-m5q3-mvcr-gc5m 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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CVSS scores

assigned by version score vector
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
packagist silverstripe/framework
>=4.0.0-rc1, <4.0.4
>=4.1.0-rc1, <4.1.1
4.0.4
4.1.1

Classification

Weakness
  • CWE-601 URL Redirection to Untrusted Site

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.