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CVE-2017-5491

16
FAUCET Score

CVE-2017-5491 describes a vulnerability in WordPress versions prior to 4.7.1, where the wp-mail.php component could allow remote attackers to bypass posting restrictions. This is achieved by spoofing a mail server named mail.example.com. The vulnerability has a CVSS score of 5.3 (Medium), indicating a low attack complexity and no user interaction required, with a potential impact of low integrity. There is no evidence of active exploitation, exploit code availability, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.7CPE matchmatch criteria
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.16%
Probability of exploitation in next 30 days
EPSS Percentile
86.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0316 is in the 81st percentile among its peer group of 23,705 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 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

codex.wordpress.org / Version_4.7.1
Release NotesVendor Advisory
github.com / WordPress/WordPress/commit/061e8788814ac87706d8b95688df276fe3c8596a
Patch
wordpress.org / news/2017/01/wordpress-4-7-1-security-and-maintenance-release
Vendor Advisory
wpvulndb.com / vulnerabilities/8719
debian.org / security/2017/dsa-3779
openwall.com / lists/oss-security/2017/01/14/6
Mailing ListThird Party Advisory
securityfocus.com / bid/95406
securitytracker.com / id/1037591