Apache HttpClient 4.x before 4.1.1 in Apache HttpComponents, when used with an authenticating proxy server, sends the Proxy-Authorization header to the origin server, which allows remote web servers to obtain sensitive information by logging this header
Published Jul 7, 2011
4.3
MEDIUMCVSS 2.0
EPSS 6.69%
Description
Apache HttpClient 4.x before 4.1.1 in Apache HttpComponents, when used with an authenticating proxy server, sends the Proxy-Authorization header to the origin server, which allows remote web servers to obtain sensitive information by logging this header.
Affected products
No data.
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0.1
- 4.1
- 4.1
- 4.1
- 4.1
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.69% (0.06685) | 93.70th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.69% (0.06685) | 93.03th | v5 (v2026.06.15) |
| Oct 29, 2025 | 3.63% (0.03634) | 87.31th | v4 (v2025.03.14) |
| Oct 6, 2025 | 5.21% (0.05210) | 89.49th | v4 (v2025.03.14) |
| Mar 30, 2025 | 2.89% (0.02891) | 85.09th | v4 (v2025.03.14) |
| Mar 29, 2025 | 8.05% (0.08048) | 86.60th | v4 (v2025.03.14) |
| Mar 19, 2025 | 2.89% (0.02891) | 84.79th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.17% (0.04175) | 87.94th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.22% (0.00219) | 60.82th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.22% (0.00219) | 60.05th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.22% (0.00219) | 58.02th | v3 (v2023.03.01) |
| Mar 6, 2023 | 5.24% (0.05242) | 89.75th | v2 (v2022.01.01) |
| Apr 1, 2022 | 5.24% (0.05242) | 88.72th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.24% (0.05242) | 75.28th | v2 (v2022.01.01) |
References (17)
- http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061440.html vendor-advisoryx_refsource_FEDORA
- http://marc.info/?l=httpclient-users&m=129853896315461&w=2 mailing-listx_refsource_MLIST
- http://marc.info/?l=httpclient-users&m=129856318011586&w=2 mailing-listx_refsource_MLIST
- http://marc.info/?l=httpclient-users&m=129857589129183&w=2 mailing-listx_refsource_MLIST
- http://marc.info/?l=httpclient-users&m=129858274406594&w=2 mailing-listx_refsource_MLIST
- http://marc.info/?l=httpclient-users&m=129858299106950&w=2 mailing-listx_refsource_MLIST
- http://openwall.com/lists/oss-security/2011/04/07/7 mailing-listx_refsource_MLIST
- http://openwall.com/lists/oss-security/2011/04/08/1 mailing-listx_refsource_MLIST
- http://securityreason.com/securityalert/8298 third-party-advisoryx_refsource_SREASON
- http://www.apache.org/dist/httpcomponents/httpclient/RELEASE_NOTES-4.1.x.txt x_refsource_CONFIRM
- http://www.kb.cert.org/vuls/id/153049 third-party-advisoryx_refsource_CERT-VNUS Government Resource
- http://www.securityfocus.com/bid/46974 vdb-entryx_refsource_BID
- https://bugzilla.redhat.com/show_bug.cgi?id=709531 x_refsource_CONFIRM
- https://github.com/advisories/GHSA-gw85-4gmf-m7rh Advisory
- https://github.com/apache/httpcomponents-client/commit/a572756592c969affd0ce87885724e74839176fb
- https://issues.apache.org/jira/browse/HTTPCLIENT-1061 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2011-1498
Change history (0)
No recorded changes yet.