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Vulnerability record · CVE-2003-1561 · published 31 December 2003

CVE-2003-1561: Opera information exposure vulnerability

Opera · Opera

Opera, probably before 7.50, 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.

4.3 CVSS 2.0 Medium EPSS 0.97% · top 39.7% CWE-200 · Information exposure
4.3CVSS 2.0 base score
0.97%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
16 Jun 2026Last modified by NVD

Description

Opera, probably before 7.50, 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.

AV:N/AC:M/Au:N/C:P/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://securityreason.com/securityalert/4004
http://www.securityfocus.com/archive/1/348574
http://securityreason.com/securityalert/4004
http://www.securityfocus.com/archive/1/348574

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2008-4293Opera vulnerabilityUnspecified vulnerability in Opera before 9.52 on Windows, when registered as a protocol handler, allows remote attackers to cause a denial of servic…EPSS 4.5%10.0CVE-2008-3079Opera vulnerabilityUnspecified vulnerability in Opera before 9.51 on Windows allows attackers to execute arbitrary code via unknown vectors.EPSS 3.0%9.3CVE-2008-5679Opera vulnerabilityThe HTML parsing engine in Opera before 9.63 allows remote attackers to execute arbitrary code via crafted web pages that trigger an invalid pointer …EPSS 3.3%9.3CVE-2008-5178Opera memory buffer overflow vulnerabilityHeap-based buffer overflow in Opera 9.62 on Windows allows remote attackers to execute arbitrary code via a long file:// URI. NOTE: this might overla…EPSS 32%9.3CVE-2008-4794Opera improper input validation vulnerabilityOpera before 9.62 allows remote attackers to execute arbitrary commands via the History Search results page, a different vulnerability than CVE-2008-…EPSS 4.5%9.3CVE-2008-4695Opera information exposure vulnerabilityOpera before 9.60 allows remote attackers to obtain sensitive information and have unspecified other impact by predicting the cache pathname of a cac…EPSS 6.0%9.3CVE-2008-1761Opera vulnerabilityOpera before 9.27 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted newsfeed source, whi…EPSS 7.6%9.3CVE-2008-1764Opera vulnerabilityUnspecified vulnerability in Opera before 9.27 has unknown impact and attack vectors related to "keyboard handling of password inputs."EPSS 2.0%

Source: NIST National Vulnerability Database (record CVE-2003-1561), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.