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MEDIUM severity

phpBB Cross-Site Request Forgery (CSRF)GHSA-wg24-9xm9-593v

MEDIUM

GHSA-wg24-9xm9-593v is a medium-severity (CVSS 4.3) Cross-Site Request Forgery (CSRF) vulnerability in phpbb/phpbb. A fix is available for phpbb/phpbb — see the affected versions and patch details below.

Also known asCVE-2019-16107
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 3, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs36th percentile — riskier than 36% of all scored CVEsHighest risk
0.00%0.30%0.61%0.91%0.1%0.4%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐘phpbb/phpbb

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Missing form token validation in phpBB 3.2.7 allows CSRF in deleting post attachments.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistphpbb/phpbb≥ 3.2.7&&< 3.2.83.2.8composer require phpbb/phpbb:^3.2.8

Affected Products

1 product · 1 configurations
Application
phpbbphpbb
1 version
3.2.7

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for phpbb/phpbb, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update phpbb/phpbb to 3.2.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-wg24-9xm9-593v is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

Missing form token validation in phpBB 3.2.7 allows CSRF in deleting post attachments.
O3 Security · Impact-Aware SCA

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phpBB Cross-Site Request Forgery (CSRF) (Medium 4.3)