CVE-2023-4126Network attack vector

Continued account access via unrevoked session tokens

Published Aug 3, 2023 · Updated Oct 10, 2024

Insufficient session expiration in Apache Answer before 1.1.0 allows remote authenticated users to retain account access after a password change. Password-update paths change the stored password but do not remove existing access tokens from the per-user cache mapping. A valid token issued before the password change remains usable, preserving the session's existing account privileges.

CVSS severity8.8
High
EPSS probability0.57%
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

Insufficient session expiration in Apache Answer before 1.1.0 allows remote authenticated users to retain account access after a password change. Password-update paths change the stored password but do not remove existing access tokens from the per-user cache mapping. A valid token issued before the password change remains usable, preserving the session's existing account privileges.

The record

CVE
CVE-2023-4126
Published
Aug 3, 2023
Updated
Oct 10, 2024
Vendor
The Apache Software Foundation
Product
Apache Answer
Classifications
CWE-613, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 3, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 10, 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=unspecified <v1.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache Answerversion=unspecified <v1.1.0

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.1huntr.devCVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-613Insufficient Session Expiration
T1078Valid Accounts

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