CVE-2018-11469

Severity: medium (CVSS 5.9 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-05-25 · updated 2026-06-17
Weakness: CWE-200

Description

Incorrect caching of responses to requests including an Authorization header in HAProxy 1.8.0 through 1.8.9 (if cache enabled) allows attackers to achieve information disclosure via an unauthenticated remote request, related to the proto_http.c check_request_for_cacheability function.

Affected products

Canonical Ubuntu Linux: 18.04
HAProxy: from 1.8.0 through 1.8.9

References

http://www.securityfocus.com/bid/104347
https://access.redhat.com/errata/RHSA-2019:1436
https://git.haproxy.org/?p=haproxy-1.8.git%3Ba=commit%3Bh=17514045e5d934dede62116216c1b016fe23dd06
https://usn.ubuntu.com/3663-1/
http://www.securityfocus.com/bid/104347
https://access.redhat.com/errata/RHSA-2019:1436
https://git.haproxy.org/?p=haproxy-1.8.git%3Ba=commit%3Bh=17514045e5d934dede62116216c1b016fe23dd06
https://usn.ubuntu.com/3663-1/

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