CVE-2024-38513Network attack vector

Unauthorized access via client-chosen session identifiers

Published Jul 1, 2024 · Updated Aug 2, 2024

Session fixation in GoFiber Fiber before 2.52.5 allows remote attackers to create a session under a supplied identifier. Store.Get accepts a session_id cookie, header, or query value and previously retained an unknown client-chosen value for a new session instead of calling KeyGenerator. Exploitation requires an application that uses the session middleware and treats session presence as trusted state; a known identifier can then support unauthorized access after the session gains privileges.

CVSS severity9.8
Critical
EPSS probability0.69%
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 GoFiber Fiber before 2.52.5 allows remote attackers to create a session under a supplied identifier. Store.Get accepts a session_id cookie, header, or query value and previously retained an unknown client-chosen value for a new session instead of calling KeyGenerator. Exploitation requires an application that uses the session middleware and treats session presence as trusted state; a known identifier can then support unauthorized access after the session gains privileges.

The record

CVE
CVE-2024-38513
Published
Jul 1, 2024
Updated
Aug 2, 2024
Vendor
GoFiber
Product
Fiber
Classifications
CWE-384, CAPEC-61, T1550.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 1, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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 <2.52.5
  2. Affected versionversion=< 2.52.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GoFiber · Fiberversion=0 <2.52.5; version=< 2.52.5

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8GitHub Security AdvisoryCVSS: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-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