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CVE-2018-17082

31
FAUCET Score

CVE-2018-17082 is a cross-site scripting (XSS) vulnerability affecting the Apache2 component in PHP versions prior to 5.6.38, 7.0.32, 7.1.22, and 7.2.10. This flaw arises from improper handling of "Transfer-Encoding: chunked" requests, allowing an attacker to inject malicious scripts via the request body. With a CVSS score of 6.1 (Medium), this vulnerability requires user interaction and can lead to low impact on confidentiality and integrity. While not listed in CISA's KEV catalog, a Nuclei template exists for detection, and there is some community discussion, including a mention of potential cache poisoning.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.6.38CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
>= 7.0.0, < 7.0.32CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
>= 7.1.0, < 7.1.22CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
>= 7.2.0, < 7.2.10CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.10%
Probability of exploitation in next 30 days
EPSS Percentile
89.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2018-17082 · Dec 1, 2025
This CVE's current EPSS score of 0.0410 is in the 95th percentile among its peer group of 26,234 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (10)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-php71-php-0:7.1.30-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: rh-php71-php-0:7.1.30-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSFixed in: rh-php71-php-0:7.1.30-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-php71-php-0:7.1.30-1.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: php
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: php53
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: php
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: php
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-php70-php

Vendor Advisories (1)

redhatCVE-2018-17082Moderate

php: Cross-site scripting (XSS) flaw in Apache2 component via body of 'Transfer-Encoding: chunked' request

Sep 13, 2018

References

php.net / ChangeLog-5.php
Release Notes
php.net / ChangeLog-7.php
Release Notes
access.redhat.com / errata/RHSA-2019:2519
bugs.php.net / bug.php
ExploitIssue TrackingVendor Advisory
github.com / php/php-src/commit/23b057742e3cf199612fa8050ae86cae675e214e
PatchVendor Advisory
lists.debian.org / debian-lts-announce/2018/09/msg00020.html
Mailing ListThird Party Advisory
security.gentoo.org / glsa/201812-01
Third Party Advisory
security.netapp.com / advisory/ntap-20180924-0001
Third Party Advisory
debian.org / security/2018/dsa-4353
Third Party Advisory
tenable.com / security/tns-2019-07