Description
HAProxy before 2.8.2 accepts # as part of the URI component, which might allow remote attackers to obtain sensitive information or have unspecified other impact upon misinterpretation of a path_end rule, such as routing index.html#.png to a static server.
Exploits (1)
nomisec
WORKING POC
by slicingmelon · poc
https://github.com/slicingmelon/HAProxy-CVE-2023-45539-PoC
References (4)
Scores
CVSS v3
8.2
EPSS
0.0003
EPSS Percentile
7.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Lab Environment
Details
CWE
CWE-116
Status
published
Products (1)
haproxy/haproxy
< 2.8.2
Published
Nov 28, 2023
Tracked Since
Feb 18, 2026