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CVE-2011-4968
nginx http proxy module does not verify peer identity of https origin server which could facilitate man-in-the-middle attack (MITM)
Medium4.8EPSS 4.0%
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
nginx http proxy module does not verify peer identity of https origin server which could facilitate man-in-the-middle attack (MITM)
Timeline
ID reserved
By redhat
- 8 years later
· 8 years later
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium4.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 4.0% · top 9.4% of all CVEs (8 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.8.
Weakness
- http proxy module does not verify peer identity of https origin server
- CWE-20 (opens in a new tab)All about CWE-20 and its CVEs
Affected products
References (7)
- https://security-tracker.debian.org/tracker/CVE-2011-4968 (opens in a new tab)x_refsource_MISCx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4968 (opens in a new tab)x_refsource_MISCx_transferred
- https://bugzilla.suse.com/show_bug.cgi?id=CVE-2011-4968 (opens in a new tab)x_refsource_MISCx_transferred
- https://access.redhat.com/security/cve/cve-2011-4968 (opens in a new tab)x_refsource_MISCx_transferred
- http://www.openwall.com/lists/oss-security/2013/01/03/8 (opens in a new tab)x_refsource_MISCx_transferred
- http://www.securityfocus.com/bid/57139 (opens in a new tab)x_refsource_MISCx_transferred
- https://exchange.xforce.ibmcloud.com/vulnerabilities/80952 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2011-4968)Record last updated .