CVE-2023-25950 Other in HAProxy

What is CVE-2023-25950?

CVE-2023-25950 is a high-severity vulnerability in HAProxy, published on 11 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

HTTP request/response smuggling vulnerability in HAProxy version 2.7.0, and 2.6.1 to 2.6.7 allows a remote attacker to alter a legitimate user's request. As a result, the attacker may obtain sensitive information or cause a denial-of-service (DoS) condition.

Weakness: CWE-444

Which versions are affected by CVE-2023-25950?

1 open source package ship an affected version, including haproxy. It affects 1 product.

Products include Haproxy Haproxy.

How do I fix CVE-2023-25950?

Upgrade haproxy to a fixed version for your release line: 2.6.8 or 2.7.1.

Is CVE-2023-25950 being exploited?

There is no known exploitation of CVE-2023-25950 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Other vulnerabilities in HAProxy

• CVE-2026-55203 HAProxy - Integer Overflow in FCGI Demux Record Length Field Critical 9.0
• CVE-2026-55204 HAProxy - NULL Pointer Dereference in hpack_dht_insert Function High 8.7
• CVE-2023-45539 Information disclosure in n/a High 8.2
• CVE-2024-45506 Denial of service in n/a High 7.5
• CVE-2023-0836 Information disclosure in HAProxy High 7.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-haproxy-2023-25950, DEBIAN-CVE-2023-25950, GHSA-g72c-cx82-64hq, OESA-2023-1257.