CVE-2019-16782

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

3.70% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 89.2% of scored records. A rank, not a probability.

NVD base score

5.9 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2019-12-18 19:05Z6 YR AGO

Last updated

2024-08-05 01:24Z2 YR AGO

Reserved

2019-09-24

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 6.3)

CNA CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

Weaknesses

• CWE-208Observable Timing DiscrepancyBase
• CWE-203Observable DiscrepancyBase
• CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass

Data version

5.1

Document digest

a304ce0ed706e58184260307d6aa1e51378d13c490254ac2d7280b7a849823a6

• github.comhttps://github.com/rack/rack/security/advisories/GHSA-hrqr-hxpp-chr3x_refsource_CONFIRM
• github.comhttps://github.com/rack/rack/commit/7fecaee81f59926b6e1913511c90650e76673b38x_refsource_CONFIRM
• www.openwall.com[oss-security] 20191219 Re: [CVE-2019-16782] Possible Information Leak / Session Hijack Vulnerability in Rackhttp://www.openwall.com/lists/oss-security/2019/12/18/3mailing-listx_refsource_MLIST
• www.openwall.com[oss-security] 20191218 [CVE-2019-16782] Possible Information Leak / Session Hijack Vulnerability in Rackhttp://www.openwall.com/lists/oss-security/2019/12/18/2mailing-listx_refsource_MLIST
• www.openwall.com[oss-security] 20191218 Re: [CVE-2019-16782] Possible Information Leak / Session Hijack Vulnerability in Rackhttp://www.openwall.com/lists/oss-security/2019/12/19/3mailing-listx_refsource_MLIST
• lists.fedoraproject.orgFEDORA-2020-57fc0d0156https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HZXMWILCICQLA2BYSP6I2CRMUG53YBLX/vendor-advisoryx_refsource_FEDORA
• lists.opensuse.orgopenSUSE-SU-2020:0214http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00016.htmlvendor-advisoryx_refsource_SUSE
• www.openwall.com[oss-security] 20200409 Re: [CVE-2019-16782] Possible Information Leak / Session Hijack Vulnerability in Rackhttp://www.openwall.com/lists/oss-security/2020/04/08/1mailing-listx_refsource_MLIST
• www.openwall.com[oss-security] 20200408 Re: [CVE-2019-16782] Possible Information Leak / Session Hijack Vulnerability in Rackhttp://www.openwall.com/lists/oss-security/2020/04/09/2mailing-listx_refsource_MLIST