CVE-2017-9841

critical

Description

Util/PHP/eval-stdin.php in PHPUnit before 4.8.28 and 5.x before 5.6.3 allows remote attackers to execute arbitrary PHP code via HTTP POST data beginning with a "<?php " substring, as demonstrated by an attack on a site with an exposed /vendor folder, i.e., external access to the /vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php URI.

From the Tenable Blog

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Published:

References

https://www.oracle.com/security-alerts/cpuoct2021.html

https://security.gentoo.org/glsa/201711-15

https://github.com/sebastianbergmann/phpunit/pull/1956

https://github.com/sebastianbergmann/phpunit/commit/284a69fb88a2d0845d23f42974a583d8f59bf5a5

http://web.archive.org/web/20170701212357/http://phpunit.vulnbusters.com/

https://www.infosecurity-magazine.com/news/php-servers-and-iot-devices-cyber/

https://thehackernews.com/2025/10/experts-reports-sharp-increase-in.html

https://therecord.media/cryptomining-group-kinsing-hits-russia

https://www.bleepingcomputer.com/news/security/hackers-target-ssrf-bugs-in-ec2-hosted-sites-to-steal-aws-credentials/

https://isc.sans.edu/diary/rss/31528

https://www.infosecurity-magazine.com/news/androxgh0st-botnet-adopts-mozi/

https://hackread.com/androxgh0st-botnet-integrate-mozi-iot-vulnerabilities/

https://www.cloudsek.com/blog/mozi-resurfaces-as-androxgh0st-botnet-unraveling-the-latest-exploitation-wave

https://isc.sans.edu/diary/rss/31086

https://www.akamai.com/blog/security-research/2024-redtail-cryptominer-pan-os-cve-exploit

https://blogs.juniper.net/en-us/security/shielding-networks-against-androxgh0st

https://www.cisa.gov/news-events/cybersecurity-advisories/aa24-016a

https://blog.aquasec.com/loony-tunables-vulnerability-exploited-by-kinsing

https://thehackernews.com/2024/03/androxgh0st-malware-targets-laravel.html

https://www.tenable.com/blog/cve-2017-9841-drupal-sites-exploited-using-phpunit-vulnerability-in-mailchimp-modules-psa-2019

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-9841

Details

Source: Mitre, NVD

Published: 2017-06-27

Updated: 2025-10-22

Known Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

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

Severity: Critical

EPSS

EPSS: 0.94351

Vulnerability Watch

Tenable Research has classified this CVE under the following Vulnerability Watch classification, which includes active and historical (inactive) classifications. You can learn more about these classifications on our blog.

Vulnerability Being Monitored

Detections

Analytics