CVE-2020-8226

A vulnerability exists in phpBB <v3.2.10 and <v3.3.1 which allowed remote image dimensions check to be used to SSRF.

Published: 2020-08-17 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-8226 is rated Moderate Risk (43.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.97%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-8226

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.18% 0.97% +0.79%
2 2025-03-30 0.37% 0.18% -0.19%
3 2025-03-29 — 0.37% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-8226

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.8 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2020-8226

GitHub Security Advisory for CVE-2020-8226

GHSA-jhm9-h84h-rw83 · Severity: medium · Ecosystem: composer — phpBB Server-Side Request Forgery Vulnerability

OS Trackers for CVE-2020-8226

vendor priority summary link
ubuntu medium CVE-2020-8226 medium priority: Ubuntu including 1 source packages (phpbb3), 16 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 13, needed 2, needs-triage 1. https://ubuntu.com/security/CVE-2020-8226

Affected software / configurations for CVE-2020-8226

Vendor Product Version Raw CPE
phpbb phpbb < 3.2.10 cpe:2.3:a:phpbb:phpbb:*:*:*:*:*:*:*:*
phpbb phpbb >= 3.3.0, < 3.3.1 cpe:2.3:a:phpbb:phpbb:*:*:*:*:*:*:*:*

References for CVE-2020-8226

URL Tags
https://www.phpbb.com/community/viewtopic.php?f=14&t=2562631 Patch Release Notes Vendor Advisory
https://www.phpbb.com/community/viewtopic.php?f=14&t=2562636 Patch Release Notes Vendor Advisory
cvelogic Threat Intelligence