MEDIUM
OkHttp before 2.7.4 and 3.x before 3.1.2 allows man-in-the-middle attackers to bypass certificate pinning by sending a certificate chain with a certificate from a non-pinned trusted CA and the pinned certificate
Published Jan 30, 2017
5.9
MEDIUMCVSS 3.1
EPSS 2.25%
Description
OkHttp before 2.7.4 and 3.x before 3.1.2 allows man-in-the-middle attackers to bypass certificate pinning by sending a certificate chain with a certificate from a non-pinned trusted CA and the pinned certificate.
Affected products
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
5.9 MEDIUM NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact High
Availability Impact None
No CVSS v3.0 score for this CVE.
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:N/I:P/A:N
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.25% 0.02249
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02249
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.25% (0.02249) | 82.28th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.25% (0.02249) | 80.55th | v5 (v2026.06.15) |
| Jul 22, 2025 | 2.68% (0.02681) | 85.21th | v4 (v2025.03.14) |
| Jun 25, 2025 | 11.12% (0.11122) | 93.12th | v4 (v2025.03.14) |
| Mar 30, 2025 | 5.26% (0.05262) | 89.02th | v4 (v2025.03.14) |
| Mar 29, 2025 | 44.60% (0.44604) | 96.39th | v4 (v2025.03.14) |
| Mar 28, 2025 | 5.26% (0.05262) | 89.03th | v4 (v2025.03.14) |
| Mar 27, 2025 | 44.60% (0.44604) | 97.13th | v4 (v2025.03.14) |
| Mar 20, 2025 | 33.66% (0.33661) | 96.60th | v4 (v2025.03.14) |
| Mar 19, 2025 | 44.60% (0.44604) | 97.18th | v4 (v2025.03.14) |
| Mar 17, 2025 | 27.72% (0.27724) | 96.03th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.08% (0.00080) | 36.23th | v3 (v2023.03.01) |
| May 22, 2024 | 0.08% (0.00080) | 34.21th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.08% (0.00079) | 32.16th | v3 (v2023.03.01) |
| Mar 6, 2023 | 7.18% (0.07176) | 92.30th | v2 (v2022.01.01) |
| Apr 1, 2022 | 7.18% (0.07176) | 91.55th | v2 (v2022.01.01) |
| Feb 4, 2022 | 7.18% (0.07176) | 80.33th | v2 (v2022.01.01) |
Weaknesses (1)
References (8)
- http://www.openwall.com/lists/oss-security/2016/02/10/8 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/02/18/7 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://github.com/advisories/GHSA-4hc2-jh7r-wrc3 Advisory
- https://koz.io/pinning-cve-2016-2402/ x_refsource_MISCTechnical DescriptionThird Party Advisory
- https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26%40%3Ccommits.pulsar.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26@%3Ccommits.pulsar.apache.org%3E
- https://nvd.nist.gov/vuln/detail/CVE-2016-2402
- https://publicobject.com/2016/02/11/okhttp-certificate-pinning-vulnerability/ x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2016/02/10/8 | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| http://www.openwall.com/lists/oss-security/2016/02/18/7 | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://github.com/advisories/GHSA-4hc2-jh7r-wrc3 | Advisory | |
| https://koz.io/pinning-cve-2016-2402/ | x_refsource_MISCTechnical DescriptionThird Party Advisory | |
| https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26%40%3Ccommits.pulsar.apache.org%3E | mailing-listx_refsource_MLIST | |
| https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26@%3Ccommits.pulsar.apache.org%3E | ||
| https://nvd.nist.gov/vuln/detail/CVE-2016-2402 | ||
| https://publicobject.com/2016/02/11/okhttp-certificate-pinning-vulnerability/ | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jan 30, 2017
Updated Aug 5, 2024
Reserved Feb 17, 2016
Link CVE-2016-2402
CISA Vulnrichment
GHSA-4HC2-JH7R-WRC3 Updated n/a