CVE-2023-37946Network attack vector

Administrator session hijacking via retained session identifier

Published Jul 12, 2023 · Updated Nov 7, 2024

Session fixation in Jenkins OpenShift Login Plugin 1.1.0.227.v27e08dfb_1a_20 and earlier allows remote attackers to hijack an administrator session. The login flow authenticates the user while retaining the preexisting HTTP session identifier instead of invalidating it and issuing a fresh session. A remote attacker must fix a known session identifier in an administrator's browser and induce that administrator to complete OpenShift OAuth login, after which the attacker can reuse the privileged session.

CVSS severity8.8
High
EPSS probability0.83%
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 OpenShift Login Plugin 1.1.0.227.v27e08dfb_1a_20 and earlier allows remote attackers to hijack an administrator session. The login flow authenticates the user while retaining the preexisting HTTP session identifier instead of invalidating it and issuing a fresh session. A remote attacker must fix a known session identifier in an administrator's browser and induce that administrator to complete OpenShift OAuth login, after which the attacker can reuse the privileged session.

The record

CVE
CVE-2023-37946
Published
Jul 12, 2023
Updated
Nov 7, 2024
Vendor
Jenkins Project
Product
OpenShift Login
Classifications
CWE-384, CAPEC-61, T1550.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 7, 2024Record 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=0 <=1.1.0.227.v27e08dfb_1a_20

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Jenkins Project · OpenShift Loginversion=0 <=1.1.0.227.v27e08dfb_1a_20

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-384Session Fixation
CAPEC-61Session 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