CVE-2026-56224Public exploitNetwork attack vector

Session fixation via query-string authentication tokens

Published Jun 30, 2026 · Updated Jun 30, 2026

Session fixation in Capgo before 12.128.2 allows remote attackers to force users into attacker-controlled sessions via crafted login links. The checkLogin() function in src/pages/login.vue reads access_token and refresh_token from the query string and passes them directly to supabase.auth.setSession(). A victim must open the link; the browser then adopts the supplied session, and the URL can expose both tokens through history and logs.

CVSS severity5.1
Medium
EPSS probability0.27%
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 Capgo before 12.128.2 allows remote attackers to force users into attacker-controlled sessions via crafted login links. The checkLogin() function in src/pages/login.vue reads access_token and refresh_token from the query string and passes them directly to supabase.auth.setSession(). A victim must open the link; the browser then adopts the supplied session, and the URL can expose both tokens through history and logs.

The record

CVE
CVE-2026-56224
Published
Jun 30, 2026
Updated
Jun 30, 2026
Vendor
Capgo
Product
Capgo
Classifications
CWE-384, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 30, 2026Record 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 <12.128.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Capgo · Capgoversion=0 <12.128.2

Published CVSS scores

5.4VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
5.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

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 exploitPublished

Weakness, pattern, technique

CWE-384Session Fixation
T1204.001Malicious Link

Public exploit references

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