How severe is CVE-2010-1940?

CVE-2010-1940 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2010-1940 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-1940?

CVE-2010-1940 affects Apple Safari. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2010-1940?

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

When was CVE-2010-1940 published?

CVE-2010-1940 was published on 2010-05-14 and last updated on 2026-06-16.

CVE-2010-1940

CVE-2010-1940 is a medium-severity vulnerability in Apple Safari 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-255.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-255
Affected product: Apple Safari
Published: 2010-05-14
Last modified: 2026-06-16

Description

Apple Safari 4.0.5 on Windows sends the "Authorization: Basic" header appropriate for one web site to a different web site named in a Location header received from the first site, which allows remote web servers to obtain sensitive information by logging HTTP requests. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

Frequently asked questions

What is CVE-2010-1940?: Apple Safari 4.0.5 on Windows sends the "Authorization: Basic" header appropriate for one web site to a different web site named in a Location header received from the first site, which allows remote web servers to obtain sensitive information by logging HTTP requests. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.
How severe is CVE-2010-1940?: CVE-2010-1940 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2010-1940 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-1940?: CVE-2010-1940 affects Apple Safari. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2010-1940?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-1940 published?: CVE-2010-1940 was published on 2010-05-14 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:apple:safari:4.0.5:*:*:*:*:*:*:*

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