Is CVE-2011-1498 in the CISA KEV catalog?

No. CVE-2011-1498 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-1498?

CVE-2011-1498 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2011-1498?

CVE-2011-1498 has an EPSS score of 6.69% (93th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2011-1498?

Upgrade httpcomponents-client on debian 11 to 4.1.1-1 or later.

CVE & CISA-KEV Catalog

CVE-2011-1498

MEDIUMEPSS 93th pctl

4.3

CVSS v2

NVD

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.

CWE-200Information Exposure

How to fix

Remediation Available

httpcomponents-clientDebian

Fixed in:4.1.1-1CVE-2011-1498

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

6.69%probability of exploitation in 30 days

93rdpercentile

High risk: more likely to be exploited than 93% of all known CVEs.

References

Government Resource1

kb.cert.org

Other references13

Related Vulnerabilities

Other CWE-200 (Information Exposure) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-24919	High	8.6	100%	KEV + Ransom	-
CVE-2020-14181	Medium	5.3	100%	-	Fix
CVE-2021-34429	Medium	5.3	99%	-	Fix
CVE-2018-11409	Medium	5.3	98%	-	-
CVE-2021-41277	Critical	10.0	97%	KEV	-
CVE-2016-2183	High	7.5	96%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.