CVE-2023-45539

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.

Category

8.2
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.01%
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://lists.w3.org/Archives/Public/ietf-http-wg/2023JulSep/0070.html mailing list
https://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=2eab6d354322932cfec2ed54de261e4347eca9a6 broken link
https://www.mail-archive.com/haproxy%40formilux.org/msg43861.html release notes
https://lists.debian.org/debian-lts-announce/2023/12/msg00010.html mailing list

Frequently Asked Questions

What is the severity of CVE-2023-45539?
CVE-2023-45539 has been scored as a high severity vulnerability.
How to fix CVE-2023-45539?
To fix CVE-2023-45539, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-45539 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-45539 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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