Which products and versions are affected by CVE-2017-9841?

Affected: Communications Diameter Signaling Router (Oracle); Phpunit (Phpunit Project); mediawiki (arch), among others. The full list is in the CVE brief.

Is CVE-2017-9841 being exploited in the wild?

It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Nov 22, 2020.

Is CVE-2017-9841 in the CISA KEV catalog?

Yes. It was added on Feb 15, 2022 with a federal remediation due date of Aug 15, 2022.

Is there a public exploit for CVE-2017-9841?

Public exploit code is available.

How urgently should CVE-2017-9841 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2017-9841

CriticalExploitedPublic exploit

Code Injection in PHPUnit

Published Mar 26, 2022 · Updated Aug 4, 2026 · Also known as DEBIAN-CVE-2017-9841, GHSA-r7c9-c69m-rph8, UBUNTU-CVE-2017-9841

Key Facts

Patch immediately

CVE-2017-9841 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Communications Diameter Signaling Router (Oracle), Phpunit (Phpunit Project), mediawiki (arch) and 1 more product.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Nov 22, 2020. Public exploit code is available.
EPSS estimates a 100% probability of exploitation in the next 30 days.
Fixed versions are available, including mediawiki 1.28.3-1, Communications Diameter Signaling Router 8.5.0, Phpunit 5.1.3-1+ubuntu3+esm1.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

9.8

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

EPSS (30-day exploit likelihood)

100%

Higher than 99.9% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2017-9841 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

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.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
CISA KEV	Feb 15, 2022	Aug 15, 2022	Not reported
Industry KEV feed	Nov 22, 2020	Aug 15, 2022	Not reported
CIRCL KEV	Feb 15, 2022	Aug 15, 2022	Not reported
ENISA EUVD	Feb 15, 2022	n/a	Not reported

Required action: Apply updates per vendor instructions.

Affected Products

16 affected entries in total

Product	Affected versions	Fixed in
Communications Diameter Signaling RouterOracle	See advisory	8.5.0
PhpunitPhpunit Project	See advisory	4.8.27
mediawikiarch	See advisory	1.28.3-1
phpunit/phpunitcomposer	>= 5.0.10	5.6.3

Patched Releases

mediawiki

1.28.3-1

Communications Diameter Signaling Router

8.5.0

Phpunit

5.1.3-1+ubuntu3+esm1, 5.4.6-2, 4.8.27

phpunit/phpunit

4.8.28, 5.6.3

Timeline

Added to Industry KEV feed
Nov 22, 2020
Added to CISA KEV
Feb 15, 2022
Added to CIRCL KEV
Feb 15, 2022
Added to ENISA EUVD
Feb 15, 2022
Publicly disclosed
Mar 26, 2022
Last updated
Aug 4, 2026

Weakness Type

CWE-94 Improper Control of Generation of Code ('Code Injection')

References

15 more references in the full CVE brief

FAQ

Common Questions.

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/ev…
Affected: Communications Diameter Signaling Router (Oracle); Phpunit (Phpunit Project); mediawiki (arch), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Nov 22, 2020.
Yes. It was added on Feb 15, 2022 with a federal remediation due date of Aug 15, 2022.
Public exploit code is available.
Fixed versions are available, including mediawiki 1.28.3-1, Communications Diameter Signaling Router 8.5.0, Phpunit 5.1.3-1+ubuntu3+esm1.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Is CVE-2017-9841 Running On Your Attack Surface?

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