Common Weakness Enumeration

CWE-384

Allowed

Session Fixation

Abstraction: Compound · Status: Incomplete

Authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions.

572 vulnerabilities reference this CWE, most recent first.

CVE-2026-56224 (GCVE-0-2026-56224)

Vulnerability from cvelistv5 – Published: 2026-06-30 22:08 – Updated: 2026-07-01 13:04

Title

Capgo - Login CSRF and Session Fixation via URL Query Parameters

Summary

Capgo console.capgo.app/login before 12.128.2 accepts access_token and refresh_token in URL query parameters, automatically authenticating users without confirmation. Attackers can craft malicious links to force victims into attacker-controlled sessions, exposing tokens in browser history and logs.

Severity

5.1 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

5.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-01 13:04 UTC

CWE

CWE-384 - Session Fixation

Assigner

VulnCheck mitre root

References

2 references

URL	Tags
https://github.com/Cap-go/capgo/security/advisori…	vendor-advisory
https://www.vulncheck.com/advisories/capgo-login-…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Capgo	Capgo	Affected: 0 , < 12.128.2 (semver) Unaffected: 12.128.2 (semver)

Date Public

2026-03-03 00:00

Credits

Judel777

Show details on NVD website

JSON

To clipboard

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CVE-2026-48545 (GCVE-0-2026-48545)

Vulnerability from cvelistv5 – Published: 2026-05-27 14:59 – Updated: 2026-07-14 21:33 X_Open Source

Title

Gradio < 6.15.0 Cookie Injection via Shared Proxy Client

Summary

Gradio before version 6.15.0 contains a cookie injection vulnerability that allows remote attackers to perform cross-Space session fixation by exploiting a shared module-level HTTP client used across all users in the reverse proxy endpoint. Attackers controlling any HF Space can return a parent-domain cookie that the shared client stores and automatically replays into all subsequent proxy requests to other legitimate Spaces, affecting all users of the same Gradio deployment.

Severity

7.6 (High)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

6.8 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-27 15:35 UTC

CWE

CWE-384 - Session Fixation

Assigner

VulnCheck mitre root

References

5 references

URL	Tags
https://github.com/gradio-app/gradio/releases/tag…	release-notes
https://github.com/gradio-app/gradio/issues/13369	issue-tracking
https://github.com/gradio-app/gradio/pull/13384	issue-tracking
https://github.com/gradio-app/gradio/commit/feb72…	patch
https://www.vulncheck.com/advisories/gradio-cooki…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
gradio-app	gradio	Affected: 0 , < 6.15.0 (semver) cpe:2.3:a:gradio_project:gradio::::::python::*

Date Public

2026-05-07 00:00

Credits

YU SUN

Show details on NVD website

JSON

To clipboard

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CVE-2026-45773 (GCVE-0-2026-45773)

Vulnerability from cvelistv5 – Published: 2026-05-15 15:51 – Updated: 2026-05-15 16:45

Title

Turborepo: Login callback CSRF/session fixation

Summary

Turborepo is a high-performance build system for JavaScript and TypeScript codebases. Prior to 2.9.14, Turborepo's self-hosted login and SSO browser flows did not validate a CSRF state value on the localhost callback. While the CLI was waiting for authentication, a malicious web page could send a request to the local callback server with an attacker-controlled token. If accepted before the legitimate callback, the CLI could complete login with the wrong credentials. This affects users authenticating the turbo CLI against self-hosted remote cache/auth endpoints. Vercel-hosted login flows using device authorization are not affected. This vulnerability is fixed in 2.9.14.

Severity

5.1 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:L/SI:H/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-15 16:44 UTC

CWE

CWE-352 - Cross-Site Request Forgery (CSRF)
CWE-384 - Session Fixation

Assigner

GitHub_M mitre root

References

1 reference

URL	Tags
https://github.com/vercel/turborepo/security/advi…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
vercel	turborepo	Affected: < 2.9.14

Show details on NVD website

JSON

To clipboard

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CVE-2026-43827 (GCVE-0-2026-43827)

Vulnerability from cvelistv5 – Published: 2026-05-25 20:19 – Updated: 2026-05-26 12:39

Title

Apache Shiro: Session fixation: new session is not created after login by default

Summary

Default configurations of Apache Shiro have a session fixation vulnerability. This issue affects Apache Shiro from 1.0 to 2.1.0, and 3.0.0-alpha-1. Users are recommended to upgrade to version 2.1.1, or 3.0.0-alpha-2 or later, which fixes the issue. In the affected versions, when a session already exists, it is not invalidated upon successful login, nor is a new session being generated with a new ID.

Severity

5.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-26 12:39 UTC

CWE

CWE-384 - Session Fixation

Assigner

apache mitre root

References

2 references

URL	Tags
https://shiro.apache.org/security-reports.html#cv…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/05/25/6

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache Shiro	Affected: 1.0 , ≤ 2.1.0 (semver) Affected: 3.0.0-alpha-0 , ≤ 3.0.0-alpha-1 (semver)

Credits

Rasmus Moorats <xx@nns.ee> Lenny Primak <lenny@flowlogix.com>

Show details on NVD website

JSON

To clipboard

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CVE-2026-41839 (GCVE-0-2026-41839)

Vulnerability from cvelistv5 – Published: 2026-06-09 03:49 – Updated: 2026-06-23 20:41

Title

Spring Framework Escalation via Session Fixation in WebFlux

Summary

A WebFlux application with a compromised subdomain (for example, compromised via cross-site scripting (XSS)) is vulnerable to an escalation attack exchanging a known session ID for that of an authenticated user. Affected versions: Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.

Severity

4.2 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-09 13:30 UTC

CWE

CWE-384 - Session Fixation

Assigner

vmware mitre root

References

1 reference

URL	Tags
https://spring.io/security/cve-2026-41839

Impacted products

1 product

Vendor	Product	Version
Spring	Spring Framework	Affected: 7.0.0 , < 7.0.7.1 (custom) Affected: 6.2.0 , < 6.2.18.1 (custom) Affected: 6.1.0 , < 6.1.28 (custom) Affected: 5.3.0 , < 5.3.49 (custom)

Show details on NVD website

JSON

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CVE-2026-41613 (GCVE-0-2026-41613)

Vulnerability from cvelistv5 – Published: 2026-05-12 16:59 – Updated: 2026-08-10 15:13

Title

Visual Studio Code Elevation of Privilege Vulnerability

Summary

Session fixation in Visual Studio Code allows an unauthorized attacker to elevate privileges over a network.

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-07 00:00 UTC

CWE

CWE-384 - Session Fixation
CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Assigner

microsoft mitre root

References

1 reference

URL	Tags
https://msrc.microsoft.com/update-guide/vulnerabi…	vendor-advisorypatch

Impacted products

1 product

Vendor	Product	Version
Microsoft	Visual Studio Code	Affected: 1.0.0 , < 1.119.1 (custom) cpe:2.3:a:microsoft:visual_studio_code::::::::

Date Public

2026-05-12 14:00

Show details on NVD website

JSON

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CVE-2026-40082 (GCVE-0-2026-40082)

Vulnerability from cvelistv5 – Published: 2026-06-25 22:33 – Updated: 2026-06-26 18:42

Title

Cacti: Session Fixation via missing session_regenerate_id() after login

Summary

Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior have missing session_regenerate_id() after login, leading to Session Fixation. session_regenerate_id() is NOT called after successful login. The login flow at auth_login.php:203-207 directly sets $_SESSION[SESS_USER_ID] without rotating the session ID. The session cookie configuration is otherwise good (httponly=true, samesite=Strict, secure=true for HTTPS at include/global.php:513-537), but these do not prevent session fixation via same-site vectors. This issue has been fixed in version 1.2.31.

Severity

5.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-26 17:50 UTC

CWE

CWE-384 - Session Fixation

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/Cacti/cacti/security/advisorie…	x_refsource_CONFIRM
https://github.com/Cacti/cacti/commit/2fa404e70a5…	x_refsource_MISC
https://github.com/Cacti/cacti/releases/tag/relea…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
Cacti	cacti	Affected: < 1.2.31

Show details on NVD website

JSON

To clipboard

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CVE-2026-35095 (GCVE-0-2026-35095)

Vulnerability from cvelistv5 – Published: 2026-06-30 13:37 – Updated: 2026-06-30 14:42

Title

Session fixation in KTM System e-BOK

Summary

KTM System e-BOK allows the session identifier to be set by the client prior to authentication. If a cookie with a valid name is set, its value remains unchanged after successful login. This behaviour enables an attacker to fix a session ID for a victim and later hijack the authenticated session. This issue was fixed in the patch published in June 2026.

Severity

4.8 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-30 14:42 UTC

CWE

CWE-384 - Session Fixation

Assigner

CERT-PL ENISA root

References

2 references

URL	Tags
https://cert.pl/posts/2026/06/CVE-2026-35095/	third-party-advisory
https://ktmsystem.pl/internetowe-biuro-obslugi-klienta/	product

Impacted products

1 product

Vendor	Product	Version
KTM System	e-BOK	Affected: 0 , < 06.2026 (custom)

Credits

Jacek Korta

Show details on NVD website

JSON

To clipboard

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CVE-2026-34454 (GCVE-0-2026-34454)

Vulnerability from cvelistv5 – Published: 2026-04-14 22:10 – Updated: 2026-04-15 13:30

Title

OAuth2 Proxy: Session cookie not cleared when rendering sign-in page

Summary

OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. A regression introduced in 7.11.0 prevents OAuth2 Proxy from clearing the session cookie when rendering the sign-in page. In deployments that rely on the sign-in page as part of their logout flow, a user may be shown the sign-in page while the existing session cookie remains valid, meaning the browser session is not actually logged out. On shared workstations or devices, a subsequent user could continue to use the previous user's authenticated session. Deployments that use a dedicated logout/sign-out endpoint to terminate sessions are not affected. This issue is fixed in 7.15.2

Severity

3.5 (Low)


                        
                          CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-15 13:30 UTC

CWE

CWE-613 - Insufficient Session Expiration
CWE-384 - Session Fixation

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/oauth2-proxy/oauth2-proxy/secu…	x_refsource_CONFIRM
https://github.com/oauth2-proxy/oauth2-proxy/rele…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
oauth2-proxy	oauth2-proxy	Affected: >= 7.11.0, < 7.15.2

Show details on NVD website

JSON

To clipboard

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CVE-2026-33946 (GCVE-0-2026-33946)

Vulnerability from cvelistv5 – Published: 2026-03-27 21:20 – Updated: 2026-03-30 18:42

Title

MCP Ruby SDK: Insufficient Session Binding Allows SSE Stream Hijacking via Session ID Replay

Summary

MCP Ruby SDK is the official Ruby SDK for Model Context Protocol servers and clients. Prior to version 0.9.2, the Ruby SDK's streamable_http_transport.rb implementation contains a session hijacking vulnerability. An attacker who obtains a valid session ID can completely hijack the victim's Server-Sent Events (SSE) stream and intercept all real-time data. Version 0.9.2 contains a patch.

Severity

8.2 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-30 18:42 UTC

CWE

CWE-384 - Session Fixation
CWE-639 - Authorization Bypass Through User-Controlled Key

Assigner

GitHub_M mitre root

References

8 references

URL	Tags
https://github.com/modelcontextprotocol/ruby-sdk/…	x_refsource_CONFIRM
https://github.com/modelcontextprotocol/ruby-sdk/…	x_refsource_MISC
https://hackerone.com/reports/3556146	x_refsource_MISC
https://github.com/modelcontextprotocol/csharp-sd…	x_refsource_MISC
https://github.com/modelcontextprotocol/go-sdk/bl…	x_refsource_MISC
https://github.com/modelcontextprotocol/python-sd…	x_refsource_MISC
https://github.com/modelcontextprotocol/ruby-sdk/…	x_refsource_MISC
https://github.com/modelcontextprotocol/ruby-sdk/…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
modelcontextprotocol	ruby-sdk	Affected: < 0.9.2

Show details on NVD website

JSON

To clipboard

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Mitigation

Architecture and Design

Invalidate any existing session identifiers prior to authorizing a new user session.

Mitigation

Architecture and Design

For platforms such as ASP that do not generate new values for sessionid cookies, utilize a secondary cookie. In this approach, set a secondary cookie on the user's browser to a random value and set a session variable to the same value. If the session variable and the cookie value ever don't match, invalidate the session, and force the user to log on again.

Mitigation MIT-29

Operation

Strategy: Firewall

Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth [REF-1481].

CAPEC-196: Session Credential Falsification through Forging

An attacker creates a false but functional session credential in order to gain or usurp access to a service. Session credentials allow users to identify themselves to a service after an initial authentication without needing to resend the authentication information (usually a username and password) with every message. If an attacker is able to forge valid session credentials they may be able to bypass authentication or piggy-back off some other authenticated user's session. This attack differs from Reuse of Session IDs and Session Sidejacking attacks in that in the latter attacks an attacker uses a previous or existing credential without modification while, in a forging attack, the attacker must create their own credential, although it may be based on previously observed credentials.

CAPEC-21: Exploitation of Trusted Identifiers

An adversary guesses, obtains, or "rides" a trusted identifier (e.g. session ID, resource ID, cookie, etc.) to perform authorized actions under the guise of an authenticated user or service.

CAPEC-31: Accessing/Intercepting/Modifying HTTP Cookies

This attack relies on the use of HTTP Cookies to store credentials, state information and other critical data on client systems. There are several different forms of this attack. The first form of this attack involves accessing HTTP Cookies to mine for potentially sensitive data contained therein. The second form involves intercepting this data as it is transmitted from client to server. This intercepted information is then used by the adversary to impersonate the remote user/session. The third form is when the cookie's content is modified by the adversary before it is sent back to the server. Here the adversary seeks to convince the target server to operate on this falsified information.

CAPEC-39: Manipulating Opaque Client-based Data Tokens

In circumstances where an application holds important data client-side in tokens (cookies, URLs, data files, and so forth) that data can be manipulated. If client or server-side application components reinterpret that data as authentication tokens or data (such as store item pricing or wallet information) then even opaquely manipulating that data may bear fruit for an Attacker. In this pattern an attacker undermines the assumption that client side tokens have been adequately protected from tampering through use of encryption or obfuscation.

CAPEC-59: Session Credential Falsification through Prediction

This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.

CAPEC-60: Reusing Session IDs (aka Session Replay)

This attack targets the reuse of valid session ID to spoof the target system in order to gain privileges. The attacker tries to reuse a stolen session ID used previously during a transaction to perform spoofing and session hijacking. Another name for this type of attack is Session Replay.

CAPEC-61: Session Fixation

The attacker induces a client to establish a session with the target software using a session identifier provided by the attacker. Once the user successfully authenticates to the target software, the attacker uses the (now privileged) session identifier in their own transactions. This attack leverages the fact that the target software either relies on client-generated session identifiers or maintains the same session identifiers after privilege elevation.

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