CVE-2026-53981

Cap-go < v12.128.2 Account Takeover via Unauthenticated Email Change Mechanism

HIGH
7.6
CVSS Score
Published: June 12, 2026 at 03:42 PM UTC
Updated: June 17, 2026 at 10:58 AM UTC
1 product affected across 1 vendorCapgo

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Severity
HIGH7.6
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

Cap-go prior to 12.128.2 contains an account takeover vulnerability in its email change mechanism that allows an attacker with temporary authenticated session access to change the registered email address without re-authentication such as password or MFA verification. Attackers can redirect verification to an attacker-controlled email address and subsequently perform a password reset to permanently take over the victim's account.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 12.128.2
Affected range stops below 12.128.2, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 6685e5f11adef257bf3d085e481f4d8ebcec602e (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.6HIGHVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-306

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