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MEDIUM severity

Zendframework potential Cross-site Scripting vector in `Zend_Service_ReCaptcha_MailHide`GHSA-4v57-pwvf-x35j

MEDIUM

GHSA-4v57-pwvf-x35j is a medium-severity (CVSS 6.1) vulnerability in zendframework/zendframework1. A fix is available for zendframework/zendframework1 — see the affected versions and patch details below.

Published
Updated
Affected
3 pkgs
Patched
3 / 3
Exploits
None indexed
Exploitation data as of Jun 7, 2024 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

3 pkgs affected
🐘zendframework/zendframework1🐘zendframework/zendframework1🐘zendframework/zendframework1

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

Zend_Service_ReCaptcha_MailHide had a potential XSS vulnerability. Due to the fact that the email address was never validated, and because its use of htmlentities() did not include the encoding argument, it was potentially possible for a malicious user aware of the issue to inject a specially crafted multibyte string as an attack via the CAPTCHA's email argument

Affected Packages

3 total 3 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistzendframework/zendframework1≥ 1.7.0&&< 1.7.91.7.9composer require zendframework/zendframework1:^1.7.9
🐘Packagistzendframework/zendframework1≥ 1.8.0&&< 1.8.51.8.5composer require zendframework/zendframework1:^1.8.5
🐘Packagistzendframework/zendframework1≥ 1.9.0&&< 1.9.71.9.7composer require zendframework/zendframework1:^1.9.7

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for zendframework/zendframework1, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update zendframework/zendframework1 to 1.7.9 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-4v57-pwvf-x35j is resolved across your whole dependency graph.

  3. Workarounds

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

`Zend_Service_ReCaptcha_MailHide` had a potential XSS vulnerability. Due to the fact that the email address was never validated, and because its use of `htmlentities()` did not include the encoding argument, it was potentially possible for a malicious user aware of the issue to inject a specially crafted multibyte string as an attack via the CAPTCHA's email argument
O3 Security · Impact-Aware SCA

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