CVE-2016-8623
The way curl handles cookies permits other threads to trigger a use-after-free leading to information disclosure.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.55%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A flaw was found in curl before version 7.51.0. The way curl handles cookies permits other threads to trigger a use-after-free leading to information disclosure.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 2.55% probability · 85th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- haxx/curl
- Source
- secalert@redhat.com
EPSS 2.5% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.htmlPatch
- http://www.securityfocus.com/bid/94106Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037192Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:2486Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3558Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8623Issue Tracking, Patch, Third Party Advisory
- https://curl.haxx.se/CVE-2016-8623.patchPatch, Vendor Advisory
- https://curl.haxx.se/docs/adv_20161102I.htmlPatch, Vendor Advisory
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://security.gentoo.org/glsa/201701-47Third Party Advisory
- https://www.tenable.com/security/tns-2016-21Third Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.htmlPatch
- http://www.securityfocus.com/bid/94106Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037192Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:2486Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3558Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8623Issue Tracking, Patch, Third Party Advisory
- https://curl.haxx.se/CVE-2016-8623.patchPatch, Vendor Advisory
- https://curl.haxx.se/docs/adv_20161102I.htmlPatch, Vendor Advisory
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://security.gentoo.org/glsa/201701-47Third Party Advisory
- https://www.tenable.com/security/tns-2016-21Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.