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CVE-2017-9420: Cross site scripting (XSS) vulnerability in the Spiffy Calendar plugin before 3.3.0 for WordPress allows remote attackers to inject arbitrary JavaScript via the yr parameter.

medium Affects spiffy-calendar (WordPress plugin). Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

Cross site scripting (XSS) vulnerability in the Spiffy Calendar plugin before 3.3.0 for WordPress allows remote attackers to inject arbitrary JavaScript via the yr parameter.

Package
spiffy-calendar (WordPress plugin) WordPress
Affected versions
=1.0.0 or =1.0.1 or =1.0.2a or =1.0.3 or =1.1.0 or =1.1.1 or =1.1.2 or =1.1.3 or =1.1.4 or =1.1.5 or =1.1.6 or =1.1.7 or =1.1.8 or =1.2.0 or =1.2.1 or =1.3.0 or =1.3.1 or =2.0.0 or =2.0.1 or =2.1.0 or =2.1.1 or =2.1.2 or =2.1.3 or =3.0.0 or =3.0.1 or =3.0.2 or =3.0.3 or =3.0.4 or =3.0.5 or =3.0.6 or =3.0.7 or =3.0.8 or =3.1.0 or =3.1.1 or =3.1.2 or =3.1.3 or =3.1.4 or =3.1.5 or =3.2.0
Fixed in
no fix recorded
Severity
medium  CVSS 6.1
Exploitation
not on CISA KEV · EPSS 1% (70.8th percentile)
Published
2017-06-05
Source
nvd

References

CWE-79
NVD recordspiffy-calendar (WordPress plugin) advisories

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