How severe is CVE-2015-4657?

CVE-2015-4657 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2015-4657 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-4657?

CVE-2015-4657 affects Mailbird. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-4657?

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

When was CVE-2015-4657 published?

CVE-2015-4657 was published on 2015-06-18 and last updated on 2026-06-17.

CVE-2015-4657

CVE-2015-4657 is a medium-severity vulnerability in Mailbird 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% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Mailbird
Published: 2015-06-18
Last modified: 2026-06-17

Description

Cross-site scripting (XSS) vulnerability in Mailbird 2.0.16.0 and earlier allows remote attackers to inject arbitrary web script or HTML via an e-mail message body with a crafted URL.

Frequently asked questions

What is CVE-2015-4657?: Cross-site scripting (XSS) vulnerability in Mailbird 2.0.16.0 and earlier allows remote attackers to inject arbitrary web script or HTML via an e-mail message body with a crafted URL.
How severe is CVE-2015-4657?: CVE-2015-4657 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2015-4657 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-4657?: CVE-2015-4657 affects Mailbird. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-4657?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-4657 published?: CVE-2015-4657 was published on 2015-06-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mailbird:mailbird:*:*:*:*:*:*:*:*

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