How severe is CVE-2003-1560?

CVE-2003-1560 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2003-1560 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-2003-1560?

CVE-2003-1560 affects Netscape Navigator. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2003-1560?

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

When was CVE-2003-1560 published?

CVE-2003-1560 was published on 2003-12-31 and last updated on 2026-06-16.

CVE-2003-1560

CVE-2003-1560 is a medium-severity vulnerability in Netscape Navigator with a CVSS 2.0 base score of 5.0. 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-200.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Netscape Navigator
Published: 2003-12-31
Last modified: 2026-06-16

Description

Netscape 4 sends Referer headers containing https:// URLs in requests for http:// URLs, which allows remote attackers to obtain potentially sensitive information by reading Referer log data.

Frequently asked questions

What is CVE-2003-1560?: Netscape 4 sends Referer headers containing https:// URLs in requests for http:// URLs, which allows remote attackers to obtain potentially sensitive information by reading Referer log data.
How severe is CVE-2003-1560?: CVE-2003-1560 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2003-1560 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-2003-1560?: CVE-2003-1560 affects Netscape Navigator. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2003-1560?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2003-1560 published?: CVE-2003-1560 was published on 2003-12-31 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:netscape:navigator:4:*:*:*:*:*:*:*

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