CVE-2024-23316Network attack vector

Downstream data access and modification via request smuggling

Published May 31, 2024 · Updated Aug 1, 2024

HTTP request desynchronization in Ping Identity PingAccess before 8.0.1 allows remote attackers to smuggle requests through its proxy. The connection-request-header handler interprets specially crafted HTTP headers inconsistently with a downstream server, shifting request boundaries. This requires a proxied HTTP/1.1 path with differing parsers and permits unauthorized access to or modification of downstream application data.

CVSS severity8.8
High
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

HTTP request desynchronization in Ping Identity PingAccess before 8.0.1 allows remote attackers to smuggle requests through its proxy. The connection-request-header handler interprets specially crafted HTTP headers inconsistently with a downstream server, shifting request boundaries. This requires a proxied HTTP/1.1 path with differing parsers and permits unauthorized access to or modification of downstream application data.

The record

CVE
CVE-2024-23316
Published
May 31, 2024
Updated
Aug 1, 2024
Vendor
Ping Identity
Product
PingAccess
Classifications
CWE-444, CAPEC-33, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 31, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <8.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ping Identity · PingAccessversion=0 <8.0.1

Published CVSS scores

8.8Ping IdentityCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/S:P/AU:Y/R:A/RE:M/U:Amber

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-444Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
CAPEC-33HTTP Request Smuggling
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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