CVE-2023-40225

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

2.15% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 80.5% of scored records. A rank, not a probability.

NVD base score

7.2 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2023-08-10 00:00Z3 YR AGO

Last updated

2024-10-09 20:14Z1 YR AGO

Reserved

2023-08-10

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-444Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')Base
• CWE-20Improper Input ValidationClass

Data version

5.1

Document digest

e63690cf6f1316d132e448991ad88ba7df124cdb60763c313d03953e383c7658

• github.comhttps://github.com/haproxy/haproxy/issues/2237
• github.comhttps://github.com/haproxy/haproxy/commit/6492f1f29d738457ea9f382aca54537f35f9d856
• www.haproxy.orghttps://www.haproxy.org/download/2.8/src/CHANGELOG
• www.haproxy.orghttps://www.haproxy.org/download/2.7/src/CHANGELOG
• www.haproxy.orghttps://www.haproxy.org/download/2.6/src/CHANGELOG
• cwe.mitre.orghttps://cwe.mitre.org/data/definitions/436.html