EUVD-2026-36382
GHSA-x29j-7g7q-59rw
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessRegister or use forum account
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DeliveryInject SQL payload into profile field
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ExploitAdmin runs upgrade migration
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ExecutionPayload concatenated into migration query
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PersistDatabase executes injected SQL
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ImpactExfiltrate user table and credentials
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Parameterized queries, prepared statements
MITRE ATT&CK
2 techniques across 2 tactics: Initial Access, Persistence The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Exploitation requires (1) a phpBB forum whose history includes a version older than 3.3.8 and that has not yet been upgraded to 3.3.11 or newer - clean 3.3.8+ installs are not vulnerable; (2) an authenticated forum account able to populate or modify a user profile field with attacker-controlled data (PR:L); and (3) the profile field migration routine being executed, which is typically driven by an administrator during upgrade (UI:R). Forums already running 3.3.11+, instances that never used the legacy profile field schema, or sites that disable custom profile fields are not exploitable through this path. |
| Impact | The CVSS:3.0 vector AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:L produces a 7.1 score but materially understates the friction: exploitation needs an authenticated forum account (PR:L), user interaction (UI:R) - likely an administrator triggering the migration - and high attack complexity tied to the narrow upgrade window described (forums that came from <3.3.8 and have not yet reached 3.3.11). KEV status is not asserted and no EPSS value was supplied, while the tags (SQLi, Phpbb) and the single phpBB community reference indicate vendor disclosure rather than observed in-the-wild abuse. Net effect: a credible data-exposure risk for the specific upgrade cohort, but not a broad-impact emergency for already-current installations; defenders should prioritize forums that recently migrated from legacy versions. |
| Exploit ScenarioDerived | A logged-in forum member fills a custom profile field with a crafted payload containing SQL meta-characters, then an administrator of a forum still mid-upgrade from a pre-3.3.8 release triggers the profile field migration; the malicious value is concatenated into a migration SQL statement and executed, letting the attacker exfiltrate user records and password hashes from phpbb_users. No public exploit identified at time of analysis, but the SQLi class and CWE-89 pattern make weaponization straightforward once the vulnerable code path is known. |
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Alert meAnalysisAIv1 – Jun 12, 2026
SQL injection in phpBB forum software allows authenticated users to execute arbitrary SQL queries through a flawed profile field migration routine. Only forums that were upgraded from a pre-3.3.8 release and have not yet reached 3.3.11 are affected, narrowing the exposed population to a specific upgrade window. No public exploit identified at time of analysis, and EPSS data was not provided.
RemediationAI
Vendor-released patch: phpBB 3.3.11 - upgrade affected forums to 3.3.11 or later, which corrects the migration routine and remediates the SQL injection, per the advisory at https://www.phpbb.com/community/viewtopic.php?t=2672170. Until the upgrade can be performed, administrators of forums that came from pre-3.3.8 releases should defer running profile field migrations, restrict new account registration and profile field edits to trusted users, and add WAF rules that reject SQL meta-characters in custom profile field POST parameters (trade-off: legitimate users with apostrophes or special characters in profile data may be blocked); database account privileges used by phpBB should also be limited to the forum schema to reduce blast radius. Ensure a full database backup is taken before upgrading because the migration path itself is the affected code.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
phpBB is a widely deployed open-source PHP/MySQL bulletin-board engine identified by CPE cpe:2.3:a:phpbb:phpbb. The flaw maps to CWE-89 (Improper Neutralization of Special Elements used in an SQL Command), originating in the migration code that converts legacy profile field data introduced before 3.3.8 into the newer schema. Because the migration consumes user-supplied profile field values without proper parameterization or escaping, attacker-controlled strings flow into a dynamically constructed SQL statement executed against the forum database, yielding an injection primitive in the database abstraction layer.
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Severity by source
AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:L
Network-reachable forum, but exploitation needs an authenticated user (PR:L), an admin-triggered migration (UI:R), and the narrow pre-3.3.8 upgrade state (AC:H); SQLi yields high confidentiality, partial integrity/availability.
Primary rating from Vendor (hackerone).
CVSS VectorVendor: hackerone
Lifecycle Timeline
2DescriptionCVE.org
SQL injection vulnerability in phpBB profile field migration due to improper handling of user-supplied profile field data during migration, allowing execution of arbitrary SQL queries. Only applies to phpBB forums that had been updated from versions prior to phpBB 3.3.8 and have not been updated to 3.3.11 or newer yet.
Executive ViewAI
phpBB forum software contains a SQL injection vulnerability (CVE-2026-48613) exploitable by authenticated users through the profile field migration routine. Organizations running phpBB versions 3.3.8 through 3.3.10 face database compromise and user data breach risk; the vulnerability is limited to forums upgraded from older versions.
No vendor-released patch identified at time of analysis. Interim mitigations: (1) Restrict profile field modification capabilities to administrators only; (2) Implement least-privilege database access controls, limiting forum user accounts to minimum required query permissions; (3) Enable database audit logging and monitor for suspicious SQL patterns; (4) Implement network segmentation to isolate forum databases and limit lateral movement in case of compromise.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Vulnrichment
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
SQL injection exploits the way applications construct database queries by mixing user input directly into SQL statements.
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