CVE-2026-53981Public exploitNetwork attack vector

Account takeover via unverified email change

Published Jun 12, 2026 · Updated Jun 12, 2026

Improper authentication in Capgo before 12.128.2 allows remote authenticated users to take over accounts through the email-change flow. The account-settings flow accepts a new email from an existing session without password or MFA re-authentication and sends verification only to the new address. Temporary access to a valid session is sufficient to redirect recovery, reset the password, lock out the account holder, and retain account control.

CVSS severity7.2
High
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Capgo before 12.128.2 allows remote authenticated users to take over accounts through the email-change flow. The account-settings flow accepts a new email from an existing session without password or MFA re-authentication and sends verification only to the new address. Temporary access to a valid session is sufficient to redirect recovery, reset the password, lock out the account holder, and retain account control.

The record

CVE
CVE-2026-53981
Published
Jun 12, 2026
Updated
Jun 12, 2026
Vendor
Capgo
Product
Capgo
Classifications
CWE-306, T1078.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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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 privilegesauthenticated

What is affected?

Capgo · Capgoversion=0 <12.128.2

Published CVSS scores

8.3GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
7.6VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
7.2VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1078.004Valid Accounts: Cloud Accounts

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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