How severe is CVE-2009-3021?

CVE-2009-3021 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2009-3021 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-3021?

CVE-2009-3021 primarily affects Yoshinori Tahara Mycaljp. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-3021?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-3021 published?

CVE-2009-3021 was published on 2009-08-31 and last updated on 2026-06-16.

CVE-2009-3021

CVE-2009-3021 is a medium-severity vulnerability in Yoshinori Tahara Mycaljp with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Yoshinori Tahara Mycaljp
Published: 2009-08-31
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in Site Calendar 'mycaljp' plugin 2.0.0 through 2.0.6, as used in the Japanese extended package of Geeklog 1.5.0 through 1.5.2 and when distributed 20090629 or earlier, allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Frequently asked questions

What is CVE-2009-3021?: Cross-site scripting (XSS) vulnerability in Site Calendar 'mycaljp' plugin 2.0.0 through 2.0.6, as used in the Japanese extended package of Geeklog 1.5.0 through 1.5.2 and when distributed 20090629 or earlier, allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
How severe is CVE-2009-3021?: CVE-2009-3021 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2009-3021 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-3021?: CVE-2009-3021 primarily affects Yoshinori Tahara Mycaljp. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-3021?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-3021 published?: CVE-2009-3021 was published on 2009-08-31 and last updated on 2026-06-16.

References

Affected products (10)

cpe:2.3:a:yoshinori_tahara:mycaljp:2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:yoshinori_tahara:mycaljp:2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:yoshinori_tahara:mycaljp:2.0.2:*:*:*:*:*:*:*
cpe:2.3:a:yoshinori_tahara:mycaljp:2.0.3:*:*:*:*:*:*:*
cpe:2.3:a:yoshinori_tahara:mycaljp:2.0.4:*:*:*:*:*:*:*
cpe:2.3:a:yoshinori_tahara:mycaljp:2.0.5:*:*:*:*:*:*:*
cpe:2.3:a:yoshinori_tahara:mycaljp:2.0.6:*:*:*:*:*:*:*
cpe:2.3:a:geeklog:geeklog:1.5.0:*:ja:*:*:*:*:*
cpe:2.3:a:geeklog:geeklog:1.5.1:*:ja:*:*:*:*:*
cpe:2.3:a:geeklog:geeklog:1.5.2:*:ja:*:*:*:*:*

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →