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CVE-2003-1605

curl 7.x before 7.10.7 sends CONNECT proxy credentials to the remote server.

7.5 HighFix available

curl 7.x before 7.10.7 sends CONNECT proxy credentials to the remote server.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

1.95%Up 1.1 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 7.5

curl 7.x before 7.10.7 sends CONNECT proxy credentials to the remote server.

Record
CVE-2003-1605
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:P/I:N/A:N
Weakness
CWE-255
Updated
2026-11-02
CVE List No score

curl 7.x before 7.10.7 sends CONNECT proxy credentials to the remote server.

Record
CVE-2003-1605
Updated
2026-11-02
EUVDEUVD-2003-1595 No score

curl 7.x before 7.10.7 sends CONNECT proxy credentials to the remote server.

Record
EUVD-2003-1595
Updated
2026-11-03
GitHub AdvisoriesGHSA-4f8m-5f89-p953 7.5

curl 7.x before 7.10.7 sends CONNECT proxy credentials to the remote server.

curl 7.x before 7.10.7 sends CONNECT proxy credentials to the remote server.

Record
GHSA-4f8m-5f89-p953
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSV 7.5

curl 7.x before 7.10.7 sends CONNECT proxy credentials to the remote server.

Record
CVE-2003-1605
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVDEBIAN-CVE-2003-1605 7.5

curl 7.x before 7.10.7 sends CONNECT proxy credentials to the remote server.

Record
DEBIAN-CVE-2003-1605
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVCURL-CVE-2003-1605 No score

Proxy Authentication Header Information Leakage

When curl connected to a site via an HTTP proxy with the CONNECT request, the user and password used for the proxy connection was also sent off to the remote server.

Record
CURL-CVE-2003-1605
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
curl
Debian:12
before 7.10.7-1
7.10.7-1
curl
Debian:13
before 7.10.7-1
7.10.7-1
curl
Debian:14
before 7.10.7-1
7.10.7-1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2003-1605 is a high vulnerability (CVSS 7.5) in Haxx Curl, published August 3, 2003. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.95%, the 80th percentile. Fixed in curl 7.10.7-1.

References

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