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CVE-2020-5502

21
FAUCET Score

CVE-2020-5502 describes a Cross-Site Request Forgery (CSRF) vulnerability in phpBB version 3.2.8, allowing an attacker to approve pending group memberships without the user's consent. This medium-severity vulnerability (CVSS 6.5) requires user interaction and can lead to unauthorized changes in group membership, impacting data integrity. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
3.2.8CPE matchmatch criteria
cpe:2.3:a:phpbb:phpbb:3.2.8:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
35.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 37th percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

composerpatch availablevia ghsa
Product: phpbb/phpbbFixed in: 3.2.9

Vendor Advisories (1)

composerGHSA-69q7-hww4-8pjqmedium

phpBB allows CSRF

May 24, 2022

References

blog.phpbb.com / category/security
Vendor Advisory
phpbb.com / community/viewtopic.php
Vendor Advisory