CVE-2023-24444Network attack vector

Administrator access via retained pre-login session

Published Jan 24, 2023 · Updated Apr 2, 2025

Session fixation in Jenkins OpenID Plugin 2.4 and earlier allows remote attackers to gain administrator access through a retained session. The plugin preserves the pre-login HTTP session when OpenID authentication succeeds, so a session identifier known to an attacker becomes authenticated. Exploitation requires inducing an administrator to complete login in that fixed session; the attacker can then reuse it with the administrator’s access.

CVSS severity9.8
Critical
EPSS probability1.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Session fixation in Jenkins OpenID Plugin 2.4 and earlier allows remote attackers to gain administrator access through a retained session. The plugin preserves the pre-login HTTP session when OpenID authentication succeeds, so a session identifier known to an attacker becomes authenticated. Exploitation requires inducing an administrator to complete login in that fixed session; the attacker can then reuse it with the administrator’s access.

The record

CVE
CVE-2023-24444
Published
Jan 24, 2023
Updated
Apr 2, 2025
Vendor
Jenkins Project
Product
Jenkins OpenID Plugin
Classifications
CWE-404, CWE-384, T1550.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 24, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=unspecified <=2.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Jenkins Project · Jenkins OpenID Pluginversion=unspecified <=2.4

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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-404Improper Resource Shutdown or Release
CWE-384Session Fixation
T1550.004Use Alternate Authentication Material: Web Session Cookie

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo