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Vulnerability details: VCID-ksrz-h74j-hkd7
Vulnerability ID VCID-ksrz-h74j-hkd7
Aliases CVE-2023-45539
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 7.4
Risk 3.7
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-288 Authentication Bypass Using an Alternate Path or Channel
System Score Found at
cvssv3 5.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-45539.json
epss 0.00013 https://api.first.org/data/v1/epss?cve=CVE-2023-45539
epss 0.00013 https://api.first.org/data/v1/epss?cve=CVE-2023-45539
epss 0.00013 https://api.first.org/data/v1/epss?cve=CVE-2023-45539
epss 0.00013 https://api.first.org/data/v1/epss?cve=CVE-2023-45539
epss 0.00013 https://api.first.org/data/v1/epss?cve=CVE-2023-45539
epss 0.00013 https://api.first.org/data/v1/epss?cve=CVE-2023-45539
epss 0.00013 https://api.first.org/data/v1/epss?cve=CVE-2023-45539
epss 0.00013 https://api.first.org/data/v1/epss?cve=CVE-2023-45539
epss 0.00013 https://api.first.org/data/v1/epss?cve=CVE-2023-45539
epss 0.00013 https://api.first.org/data/v1/epss?cve=CVE-2023-45539
epss 0.00013 https://api.first.org/data/v1/epss?cve=CVE-2023-45539
epss 0.00013 https://api.first.org/data/v1/epss?cve=CVE-2023-45539
epss 0.00013 https://api.first.org/data/v1/epss?cve=CVE-2023-45539
cvssv3.1 5.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 8.2 https://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=2eab6d354322932cfec2ed54de261e4347eca9a6
ssvc Track https://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=2eab6d354322932cfec2ed54de261e4347eca9a6
cvssv3.1 8.2 https://lists.debian.org/debian-lts-announce/2023/12/msg00010.html
ssvc Track https://lists.debian.org/debian-lts-announce/2023/12/msg00010.html
cvssv3.1 8.2 https://lists.w3.org/Archives/Public/ietf-http-wg/2023JulSep/0070.html
ssvc Track https://lists.w3.org/Archives/Public/ietf-http-wg/2023JulSep/0070.html
cvssv3.1 8.2 https://nvd.nist.gov/vuln/detail/CVE-2023-45539
cvssv3.1 8.2 https://www.mail-archive.com/haproxy%40formilux.org/msg43861.html
ssvc Track https://www.mail-archive.com/haproxy%40formilux.org/msg43861.html
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-45539.json
https://api.first.org/data/v1/epss?cve=CVE-2023-45539
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-40225
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-45539
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
0070.html https://lists.w3.org/Archives/Public/ietf-http-wg/2023JulSep/0070.html
2253037 https://bugzilla.redhat.com/show_bug.cgi?id=2253037
cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*
CVE-2023-45539 https://nvd.nist.gov/vuln/detail/CVE-2023-45539
msg00010.html https://lists.debian.org/debian-lts-announce/2023/12/msg00010.html
msg43861.html https://www.mail-archive.com/haproxy%40formilux.org/msg43861.html
?p=haproxy.git%3Ba=commit%3Bh=2eab6d354322932cfec2ed54de261e4347eca9a6 https://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=2eab6d354322932cfec2ed54de261e4347eca9a6
RHSA-2024:10267 https://access.redhat.com/errata/RHSA-2024:10267
RHSA-2024:10271 https://access.redhat.com/errata/RHSA-2024:10271
RHSA-2024:1089 https://access.redhat.com/errata/RHSA-2024:1089
RHSA-2024:1142 https://access.redhat.com/errata/RHSA-2024:1142
RHSA-2024:4853 https://access.redhat.com/errata/RHSA-2024:4853
RHSA-2024:6412 https://access.redhat.com/errata/RHSA-2024:6412
RHSA-2024:8849 https://access.redhat.com/errata/RHSA-2024:8849
RHSA-2024:8874 https://access.redhat.com/errata/RHSA-2024:8874
RHSA-2024:9945 https://access.redhat.com/errata/RHSA-2024:9945
USN-6530-1 https://usn.ubuntu.com/6530-1/
USN-6530-2 https://usn.ubuntu.com/6530-2/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-45539.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N Found at https://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=2eab6d354322932cfec2ed54de261e4347eca9a6
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-10-15T17:28:42Z/ Found at https://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=2eab6d354322932cfec2ed54de261e4347eca9a6
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N Found at https://lists.debian.org/debian-lts-announce/2023/12/msg00010.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-10-15T17:28:42Z/ Found at https://lists.debian.org/debian-lts-announce/2023/12/msg00010.html
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N Found at https://lists.w3.org/Archives/Public/ietf-http-wg/2023JulSep/0070.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-10-15T17:28:42Z/ Found at https://lists.w3.org/Archives/Public/ietf-http-wg/2023JulSep/0070.html
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2023-45539
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N Found at https://www.mail-archive.com/haproxy%40formilux.org/msg43861.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-10-15T17:28:42Z/ Found at https://www.mail-archive.com/haproxy%40formilux.org/msg43861.html
Exploit Prediction Scoring System (EPSS)
Percentile 0.01328
EPSS Score 0.00013
Published At June 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-01T12:16:27.987185+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/6530-1/ 36.1.3