CVE-2016-4029
WordPress before 4.5 does not consider octal and hexadecimal IP address formats when determining...
CVE-2016-4029 is a high vulnerability (CVSS 8.6) in Wordpress, published August 7, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.96%, the 90th percentile. Fixed in wordpress 4.5+dfsg-1.
- Severity
- 8.6 HighCVSS 3.1, NVD
- Exploit chance
- 3.96%EPSS, 90th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
4.5+dfsg-1wordpress +5 more
Description
WordPress before 4.5 does not consider octal and hexadecimal IP address formats when determining an intranet address, which allows remote attackers to bypass an intended SSRF protection mechanism via a crafted address.
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
- High
- Availability
- None
Exploit likelihood
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
wordpressDebian:12 | before 4.5+dfsg-1 | 4.5+dfsg-1 |
wordpressDebian:13 | before 4.5+dfsg-1 | 4.5+dfsg-1 |
wordpressDebian:14 | before 4.5+dfsg-1 | 4.5+dfsg-1 |
wordpressDebian:7 From an advisory covering 7 CVEs | before 3.6.1+dfsg-1~deb7u12, 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 19 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~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~deb7u12 |
wordpressDebian:8 From an advisory covering 5 CVEs | before 4.1+dfsg-1+deb8u10, plus listed versions 4.1+dfsg-14.1+dfsg-1+deb8u14.1+dfsg-1+deb8u24.1+dfsg-1+deb8u34.1+dfsg-1+deb8u4 Show 5 moreShow less4.1+dfsg-1+deb8u54.1+dfsg-1+deb8u64.1+dfsg-1+deb8u74.1+dfsg-1+deb8u84.1+dfsg-1+deb8u9 | 4.1+dfsg-1+deb8u10 |
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 |
What each source reports
NVD Score used
WordPress before 4.5 does not consider octal and hexadecimal IP address formats when determining an intranet address, which allows remote attackers to bypass an intended SSRF protection mechanism via a crafted address.
- Record
CVE-2016-4029- CVSS 3.1
- 8.6 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-918
- Updated
- 2026-11-02
CVE ListNo score
WordPress before 4.5 does not consider octal and hexadecimal IP address formats when determining an intranet address, which allows remote attackers to bypass an intended SSRF protection mechanism via a crafted address.
- Record
CVE-2016-4029- Updated
- 2026-11-02
EUVDEUVD-2016-5035No score
WordPress before 4.5 does not consider octal and hexadecimal IP address formats when determining an intranet address, which allows remote attackers to bypass an intended SSRF protection mechanism via a crafted address.
- Record
EUVD-2016-5035- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-j2rp-vprg-5m9q
WordPress before 4.5 does not consider octal and hexadecimal IP address formats when determining...
WordPress before 4.5 does not consider octal and hexadecimal IP address formats when determining an intranet address, which allows remote attackers to bypass an intended SSRF protection mechanism via a crafted address.
- Record
GHSA-j2rp-vprg-5m9q- CVSS 3.0
- 8.6 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N - Weakness
- CWE-285, CWE-918
- Updated
- 2026-11-02
OSV
WordPress before 4.5 does not consider octal and hexadecimal IP address formats when determining an intranet address, which allows remote attackers to bypass an intended SSRF protection mechanism via a crafted address.
- Record
CVE-2016-4029- CVSS 3.1
- 8.6 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2016-4029
WordPress before 4.5 does not consider octal and hexadecimal IP address formats when determining an intranet address, which allows remote attackers to bypass an intended SSRF protection mechanism via a crafted address.
- Record
DEBIAN-CVE-2016-4029- CVSS 3.1
- 8.6 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2016-4029
WordPress before 4.5 does not consider octal and hexadecimal IP address formats when determining an intranet address, which allows remote attackers to bypass an intended SSRF protection mechanism via a crafted address.
- Record
UBUNTU-CVE-2016-4029- CVSS 3.1
- 8.6 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N - Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.