Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2016-5873

26
FAUCET Score

CVE-2016-5873 describes a critical buffer overflow vulnerability in the pecl_http PHP extension, specifically affecting versions prior to 3.0.1. This flaw allows remote attackers to execute arbitrary code by injecting non-printable characters into a URL, leveraging a CVSS score of 9.8. While the vulnerability is severe, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion, suggesting a low current threat landscape despite its critical nature.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.0.1CPE matchmatch criteria
cpe:2.3:a:php:pecl_http:*:rc1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.70%
Probability of exploitation in next 30 days
EPSS Percentile
90.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0470 is in the 85th percentile among its peer group of 36,833 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

bugs.php.net / bug.php
ExploitVendor Advisory
github.com / m6w6/ext-http/commit/3724cd76a28be1d6049b5537232e97ac
PatchVendor Advisory
pecl.php.net / package/pecl_http/3.0.1
Release NotesVendor Advisory
security.gentoo.org / glsa/201612-17
security.netapp.com / advisory/ntap-20180112-0001
openwall.com / lists/oss-security/2016/06/29/1
Mailing ListPatchThird Party Advisory
openwall.com / lists/oss-security/2016/06/29/4
Mailing ListThird Party Advisory
securityfocus.com / bid/95863