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Fencer Intel
high 7.3

CVE-2020-28470 json

Cross-site Scripting (XSS)

published 5y ago modified 4mo ago also GHSA-r96p-v3cr-gfv8 , EUVD-2021-0866

cvss
7.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 57%
public exploits
0
none known

Summary

This affects the package @scullyio/scully before 1.0.9. The transfer state is serialised with the JSON.stringify() function and then written into the HTML page.

Patch / fix

  • npm @scullyio/scully 1.0.9
  • npm @scullyio/ng-lib 1.0.1
  • n/a @scullyio/scully 1.0.9

Is CVE-2020-28470 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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Exploit prediction

0.84% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
CNA 3.1 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N
GitHub 3.1 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected packages

ecosystem package affected fixed in
npm @scullyio/scully
<1.0.9
1.0.9
npm @scullyio/ng-lib
<1.0.1
1.0.1

Affected products

  • n/a @scullyio/scully

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

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.