CVE-2026-48612 (GCVE-0-2026-48612)
Vulnerability from cvelistv5 – Published: 2026-06-12 02:27 – Updated: 2026-06-12 02:27
VLAI
Summary
Improper state verification in the OAuth implementation could allow an attacker to manipulate the authentication flow and cause a victim’s account to be linked to an attacker-controlled account. This can result in unauthorized account linking and potential account takeover.
Severity
CWE
- CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
References
1 reference
{
"containers": {
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"affected": [
{
"defaultStatus": "unaffected",
"product": "phpBB",
"vendor": "phpBB",
"versions": [
{
"lessThanOrEqual": "3.3.16",
"status": "affected",
"version": "3.3.0",
"versionType": "semver"
}
]
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"descriptions": [
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"lang": "en",
"value": "Improper state verification in the OAuth implementation could allow an attacker to manipulate the authentication flow and cause a victim\u2019s account to be linked to an attacker-controlled account. This can result in unauthorized account linking and potential account takeover."
}
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"metrics": [
{
"cvssV3_0": {
"baseScore": 8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H",
"version": "3.0"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-352",
"description": "CWE-352 Cross-Site Request Forgery (CSRF)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-12T02:27:43.506Z",
"orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
"shortName": "hackerone"
},
"references": [
{
"url": "https://www.phpbb.com/community/viewtopic.php?t=2672170"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
"assignerShortName": "hackerone",
"cveId": "CVE-2026-48612",
"datePublished": "2026-06-12T02:27:43.506Z",
"dateReserved": "2026-05-22T15:00:09.276Z",
"dateUpdated": "2026-06-12T02:27:43.506Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2026-48612\",\"sourceIdentifier\":\"support@hackerone.com\",\"published\":\"2026-06-12T04:17:10.123\",\"lastModified\":\"2026-06-12T04:17:10.123\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Improper state verification in the OAuth implementation could allow an attacker to manipulate the authentication flow and cause a victim\u2019s account to be linked to an attacker-controlled account. This can result in unauthorized account linking and potential account takeover.\"}],\"metrics\":{\"cvssMetricV30\":[{\"source\":\"support@hackerone.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H\",\"baseScore\":8.0,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"REQUIRED\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.3,\"impactScore\":6.0}]},\"weaknesses\":[{\"source\":\"support@hackerone.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-352\"}]}],\"references\":[{\"url\":\"https://www.phpbb.com/community/viewtopic.php?t=2672170\",\"source\":\"support@hackerone.com\"}]}}"
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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