GHSA-848f-mph5-9pm9 — zendframework/zendframewo…
HIGHGHSA-848f-mph5-9pm9 is a high-severity (CVSS 7.5) vulnerability in zendframework/zendframework1. A fix is available for zendframework/zendframework1 — see the affected versions and patch details below.
Zendframework Potential Information Disclosure and Insufficient Entropy vulnerability
Real-World Exposure
zendframework/zendframework1Real-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
In Zend Framework, Zend_Captcha_Word (v1) and Zend\Captcha\Word (v2) generate a "word" for a CAPTCHA challenge by selecting a sequence of random letters from a character set. Prior to this advisory, the selection was performed using PHP's internal array_rand() function. This function does not generate sufficient entropy due to its usage of rand() instead of more cryptographically secure methods such as openssl_pseudo_random_bytes(). This could potentially lead to information disclosure should an attacker be able to brute force the random number generation.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | zendframework/zendframework1 | ≥ 1.12.0&&< 1.12.17 | 1.12.17composer require zendframework/zendframework1:^1.12.17 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for zendframework/zendframework1, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update zendframework/zendframework1 to 1.12.17 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-848f-mph5-9pm9 is resolved across your whole dependency graph.
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.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-848f-mph5-9pm9 can be triaged on real exposure rather than presence alone.
Tailored to GHSA-848f-mph5-9pm9. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-848f-mph5-9pm9 in your dependencies?
O3 Security finds GHSA-848f-mph5-9pm9 across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.