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CVE-2013-6919 james-heinrich/phpthumb

Fix: JamesHeinrich/phpThumb@457a37d

CVE-2013-6919 is a security vulnerability in james-heinrich/phpthumb. 1 public exploit reference exists, so weaponization risk is real. A fix is available for james-heinrich/phpthumb — see the affected versions and patch details below.

phpThumb is vulnerable to Server-Side Request Forgery (SSRF)

Published
May 17, 2022
Updated
Nov 8, 2023
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Sep 21, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.2%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs66th percentile — riskier than 66% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Real-World Exposure

1 pkg affected
🐘james-heinrich/phpthumb

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

The default configuration of phpThumb before 1.7.12 has a false value for the disable_debug option, which allows remote attackers to conduct Server-Side Request Forgery (SSRF) attacks via the src parameter.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistjames-heinrich/phpthumball versions1.7.12composer require james-heinrich/phpthumb:^1.7.12
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Detection & mitigation playbook

Open-source dependency
  1. Detect

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

  2. Fix

    Update james-heinrich/phpthumb to 1.7.12 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2013-6919 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.

  4. How O3 protects you

    O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2013-6919 can be triaged on real exposure rather than presence alone.

Tailored to CVE-2013-6919. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

The default configuration of phpThumb before 1.7.12 has a false value for the disable_debug option, which allows remote attackers to conduct Server-Side Request Forgery (SSRF) attacks via the src parameter.
O3 Security · Impact-Aware SCA

Is CVE-2013-6919 in your dependencies?

O3 Security finds CVE-2013-6919 across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

CVE-2013-6919: james SSRF | O3 Security