High
Cap-go < v12.128.2 Account Takeover via Unauthenticated Email Change Mechanism
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-53981
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 17:21 UTC · Revision 1
Source evidence
Cap-go < v12.128.2 Account Takeover via Unauthenticated Email Change Mechanism
core-osv · Original sourcePublished 12 Jun 2026, 15:42 UTC
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.
osv:CVE-2026-53981
Complete source record
{
"id": "6b6ae25ca6dd923131695a5728f59b2ae38513d4e2b1a642ceb0e5b2818ea304",
"url": "https://osv.dev/vulnerability/CVE-2026-53981",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Cap-go < v12.128.2 Account Takeover via Unauthenticated Email Change Mechanism",
"summary": "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.",
"evidence": "osv:CVE-2026-53981",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-53981",
"aliases": [
"CVE-2026-53981",
"GHSA-w56g-jv78-hf79"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/Cap-go/capgo.app",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "6685e5f11adef257bf3d085e481f4d8ebcec602e"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "12.128.2"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"fixed": "6685e5f11adef257bf3d085e481f4d8ebcec602e"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53981.json"
}
}
],
"modified": "2026-10-28T02:30:21.382898659Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53981.json",
"https://github.com/Cap-go/capgo/security/advisories/GHSA-w56g-jv78-hf79",
"https://nvd.nist.gov/vuln/detail/CVE-2026-53981",
"https://www.vulncheck.com/advisories/cap-go-account-takeover-via-unauthenticated-email-change-mechanism",
"https://github.com/Cap-go/capgo/commit/6685e5f11adef257bf3d085e481f4d8ebcec602e"
],
"provider_metadata": {
"cwe_ids": [
"CWE-306"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53981.json"
}
},
"related_cves": [
{
"value": "CVE-2026-53981",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 487702,
"published_at": "2026-06-12T15:42:18.383+00:00"
}