Vulnerability in Haproxy
CVE-2023-45539
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.015 (73.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.w3.org/Archives/Public/ietf-http-wg/2023JulSep/0070.html (Mailing List)
- git.haproxy.org/ (Broken Link)
- www.mail-archive.com/haproxy@formilux.org/msg43861.html (Release Notes)
- lists.debian.org/debian-lts-announce/2023/12/msg00010.html (mailing-list)
Frequently asked questions
- What is CVE-2023-45539?
- CVE-2023-45539 is a high-severity vulnerability in Haproxy, classified under Improper Encoding or Escaping of Output. CVSS score: 8.2/10. Published 2023-11-28.
- How severe is CVE-2023-45539?
- High severity. CVSS v3 base score is 8.2 out of 10.
- Is CVE-2023-45539 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.