CVE-2017-5491
wp-mail.php in WordPress before 4.7.1 might allow remote attackers to bypass intended posting...
wp-mail.php in WordPress before 4.7.1 might allow remote attackers to bypass intended posting restrictions via a spoofed mail server with the mail.example.com name.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
wp-mail.php in WordPress before 4.7.1 might allow remote attackers to bypass intended posting restrictions via a spoofed mail server with the mail.example.com name.
- Record
CVE-2017-5491- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-1188
- Updated
- 2026-11-02
CVE List No score
wp-mail.php in WordPress before 4.7.1 might allow remote attackers to bypass intended posting restrictions via a spoofed mail server with the mail.example.com name.
- Record
CVE-2017-5491- Updated
- 2026-11-02
EUVDEUVD-2017-14595 No score
wp-mail.php in WordPress before 4.7.1 might allow remote attackers to bypass intended posting restrictions via a spoofed mail server with the mail.example.com name.
- Record
EUVD-2017-14595- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-pqh4-x29p-6xrc
wp-mail.php in WordPress before 4.7.1 might allow remote attackers to bypass intended posting...
wp-mail.php in WordPress before 4.7.1 might allow remote attackers to bypass intended posting restrictions via a spoofed mail server with the mail.example.com name.
- Record
GHSA-pqh4-x29p-6xrc- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-1188
- Updated
- 2026-11-02
OSV
wp-mail.php in WordPress before 4.7.1 might allow remote attackers to bypass intended posting restrictions via a spoofed mail server with the mail.example.com name.
- Record
CVE-2017-5491- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2017-5491
wp-mail.php in WordPress before 4.7.1 might allow remote attackers to bypass intended posting restrictions via a spoofed mail server with the mail.example.com name.
- Record
DEBIAN-CVE-2017-5491- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2017-5491
wp-mail.php in WordPress before 4.7.1 might allow remote attackers to bypass intended posting restrictions via a spoofed mail server with the mail.example.com name.
- Record
UBUNTU-CVE-2017-5491- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
wordpressDebian:12 |
before 4.7.1+dfsg-1 | 4.7.1+dfsg-1 |
wordpressDebian:13 |
before 4.7.1+dfsg-1 | 4.7.1+dfsg-1 |
wordpressDebian:14 |
before 4.7.1+dfsg-1 | 4.7.1+dfsg-1 |
wordpressDebian:7 |
before 3.6.1+dfsg-1~deb7u13, plus listed versions 3.5.1+dfsg-23.5.2+dfsg-13.5.2+dfsg-1~deb6u13.5.2+dfsg-1~deb7u13.6+dfsg-1 Show 20 moreShow less3.6.1+dfsg-1~deb6u13.6.1+dfsg-1~deb6u23.6.1+dfsg-1~deb6u33.6.1+dfsg-1~deb6u43.6.1+dfsg-1~deb6u53.6.1+dfsg-1~deb6u63.6.1+dfsg-1~deb6u73.6.1+dfsg-1~deb6u83.6.1+dfsg-1~deb6u93.6.1+dfsg-1~deb7u13.6.1+dfsg-1~deb7u103.6.1+dfsg-1~deb7u113.6.1+dfsg-1~deb7u123.6.1+dfsg-1~deb7u23.6.1+dfsg-1~deb7u33.6.1+dfsg-1~deb7u43.6.1+dfsg-1~deb7u53.6.1+dfsg-1~deb7u63.6.1+dfsg-1~deb7u83.6.1+dfsg-1~deb7u9 |
3.6.1+dfsg-1~deb7u13 |
wordpressDebian:8 |
before 4.1+dfsg-1+deb8u12, plus listed versions 4.1+dfsg-14.1+dfsg-1+deb8u14.1+dfsg-1+deb8u104.1+dfsg-1+deb8u114.1+dfsg-1+deb8u2 Show 7 moreShow less4.1+dfsg-1+deb8u34.1+dfsg-1+deb8u44.1+dfsg-1+deb8u54.1+dfsg-1+deb8u64.1+dfsg-1+deb8u74.1+dfsg-1+deb8u84.1+dfsg-1+deb8u9 |
4.1+dfsg-1+deb8u12 |
wordpressUbuntu:16.04:LTS |
All versions, plus listed versions 4.3+dfsg-14.3.1+dfsg-14.4+dfsg-14.4.1+dfsg-14.4.2+dfsg-14.4.2+dfsg-1ubuntu1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2017-5491 is a medium vulnerability (CVSS 5.3) in Wordpress, published January 15, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.22%, the 88th percentile. Fixed in wordpress 4.7.1+dfsg-1.
References
securityfocus.com/bid/95406
github.com/WordPress/WordPress/commit/061e8788814ac87706d8b95688df276fe3c8596a
debian.org/security/2017/dsa-3779
wpvulndb.com/vulnerabilities/8719
codex.wordpress.org/Version_4.7.1
openwall.com/lists/oss-security/2017/01/14/6
Show 8 moreShow less
securitytracker.com/id/1037591
wordpress.org/news/2017/01/wordpress-4-7-1-security-and-maintenance-release
nvd.nist.gov/vuln/detail/CVE-2017-5491
security-tracker.debian.org/tracker/CVE-2017-5491
ubuntu.com/security/CVE-2017-5491
cve.org/CVERecord?id=CVE-2017-5491