7.3

CVE-2023-25950: haproxy technologies haproxy HTTP Request/Response Smuggling

Modified
AliasesDEBIAN-CVE-2023-25950
Published 11-04-2023Last modified 11-02-2025

Vulnerability summary

CVE-2023-25950 is a high (CVSS 7.3) HTTP Request/Response Smuggling vulnerability in haproxy technologies haproxy. EPSS estimates a 2.97% chance of exploitation in the next 30 days, higher than 87.1% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.3/10
010
High · v3.1 (CVE.org)
EPSS score
2.97%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 11-04-2023
    PublishedVulnerability first disclosed.
  2. 11-02-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

2.97%

Chance of exploitation in the next 30 days

Percentile

87%

Versus all other CVEs

30-day change

No change 0.00 pp

From 2.97% on 23-09-2026

23-09-202623-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • haproxy< 2.6.8-1
Haproxy1 product
  • haproxyEOL≥ 2.6.1, ≤ 2.6.7 | 2.7.0
Haproxy technologies1 product
  • haproxyversion 2.7.0, and version 2.6.1 to 2.6.7

3 vendors · 3 products

References

4 links